diff --git a/src/core/dbus-manager.c b/src/core/dbus-manager.c
index 3a36dc7a16..e1f5df296e 100644
--- a/src/core/dbus-manager.c
+++ b/src/core/dbus-manager.c
@@ -22,6 +22,7 @@
 #include "dbus-scope.h"
 #include "dbus-service.h"
 #include "dbus-unit.h"
+#include "dbus-util.h"
 #include "dbus.h"
 #include "env-util.h"
 #include "fd-util.h"
@@ -29,6 +30,7 @@
 #include "format-util.h"
 #include "initrd-util.h"
 #include "install.h"
+#include "locale-util.h"
 #include "log.h"
 #include "manager-dump.h"
 #include "os-util.h"
@@ -1082,7 +1084,13 @@ static int method_start_transient_unit(sd_bus_message *message, void *userdata,
         if (mode < 0)
                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 
-        r = bus_verify_manage_units_async(m, message, error);
+        r = bus_verify_manage_units_async_impl(
+                        m,
+                        name,
+                        "start",
+                        N_("Authentication is required to start transient '$(unit)'."),
+                        message,
+                        error);
         if (r < 0)
                 return r;
         if (r == 0)
diff --git a/src/core/dbus-util.c b/src/core/dbus-util.c
index b871d89368..b44afc4258 100644
--- a/src/core/dbus-util.c
+++ b/src/core/dbus-util.c
@@ -150,30 +150,92 @@ int bus_set_transient_usec_internal(
         return 1;
 }
 
-int bus_verify_manage_units_async_full(
-                Unit *u,
+int bus_verify_manage_units_async_impl(
+                Manager *manager,
+                const char *id,
                 const char *verb,
                 const char *polkit_message,
                 sd_bus_message *call,
                 sd_bus_error *error) {
 
-        const char *details[9] = {
-                "unit", u->id,
-                "verb", verb,
+        const char *details[9];
+        size_t n_details = 0;
+
+        assert(manager);
+        assert(call);
+
+        if (id) {
+                details[n_details++] = "unit";
+                details[n_details++] = id;
+        }
+
+        if (verb) {
+                details[n_details++] = "verb";
+                details[n_details++] = verb;
         };
 
         if (polkit_message) {
-                details[4] = "polkit.message";
-                details[5] = polkit_message;
-                details[6] = "polkit.gettext_domain";
-                details[7] = GETTEXT_PACKAGE;
+                details[n_details++] = "polkit.message";
+                details[n_details++] = polkit_message;
+                details[n_details++] = "polkit.gettext_domain";
+                details[n_details++] = GETTEXT_PACKAGE;
         }
 
+        assert(n_details < ELEMENTSOF(details));
+        details[n_details] = NULL;
+
         return bus_verify_polkit_async(
                         call,
                         "org.freedesktop.systemd1.manage-units",
-                        details,
-                        &u->manager->polkit_registry,
+                        n_details > 0 ? details : NULL,
+                        &manager->polkit_registry,
+                        error);
+}
+
+int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
+        assert(m);
+        assert(call);
+
+        return bus_verify_polkit_async(
+                        call,
+                        "org.freedesktop.systemd1.manage-unit-files",
+                        /* details= */ NULL,
+                        &m->polkit_registry,
+                        error);
+}
+
+int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
+        assert(m);
+        assert(call);
+
+        return bus_verify_polkit_async(
+                        call,
+                        "org.freedesktop.systemd1.reload-daemon",
+                        /* details= */ NULL,
+                        &m->polkit_registry, error);
+}
+
+int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
+        assert(m);
+        assert(call);
+
+        return bus_verify_polkit_async(
+                        call,
+                        "org.freedesktop.systemd1.set-environment",
+                        /* details= */ NULL,
+                        &m->polkit_registry,
+                        error);
+}
+
+int bus_verify_bypass_dump_ratelimit_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
+        assert(m);
+        assert(call);
+
+        return bus_verify_polkit_async(
+                        call,
+                        "org.freedesktop.systemd1.bypass-dump-ratelimit",
+                        /* details= */ NULL,
+                        &m->polkit_registry,
                         error);
 }
 
diff --git a/src/core/dbus-util.h b/src/core/dbus-util.h
index 0fc3a94961..471c64acb6 100644
--- a/src/core/dbus-util.h
+++ b/src/core/dbus-util.h
@@ -250,7 +250,19 @@ static inline int bus_set_transient_usec(Unit *u, const char *name, usec_t *p, s
 static inline int bus_set_transient_usec_fix_0(Unit *u, const char *name, usec_t *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error) {
         return bus_set_transient_usec_internal(u, name, p, true, message, flags, error);
 }
-int bus_verify_manage_units_async_full(Unit *u, const char *verb, const char *polkit_message, sd_bus_message *call, sd_bus_error *error);
+
+int bus_verify_manage_units_async_impl(Manager *manager, const char *id, const char *verb, const char *polkit_message, sd_bus_message *call, sd_bus_error *error);
+static inline int bus_verify_manage_units_async_full(Unit *u, const char *verb, const char *polkit_message, sd_bus_message *call, sd_bus_error *error) {
+        assert(u);
+        return bus_verify_manage_units_async_impl(u->manager, u->id, verb, polkit_message, call, error);
+}
+static inline int bus_verify_manage_units_async(Manager *manager, sd_bus_message *call, sd_bus_error *error) {
+        return bus_verify_manage_units_async_impl(manager, NULL, NULL, NULL, call, error);
+}
+int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
+int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
+int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
+int bus_verify_bypass_dump_ratelimit_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
 
 int bus_read_mount_options(sd_bus_message *message, sd_bus_error *error, MountOptions **ret_options, char **ret_format_str, const char *separator);
 
diff --git a/src/core/dbus.c b/src/core/dbus.c
index b6480937ee..2692dde151 100644
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -1172,49 +1172,6 @@ int bus_track_coldplug(Manager *m, sd_bus_track **t, bool recursive, char **l) {
         return bus_track_add_name_many(*t, l);
 }
 
-int bus_verify_manage_units_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
-        return bus_verify_polkit_async(
-                        call,
-                        "org.freedesktop.systemd1.manage-units",
-                        /* details= */ NULL,
-                        &m->polkit_registry,
-                        error);
-}
-
-int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
-        return bus_verify_polkit_async(
-                        call,
-                        "org.freedesktop.systemd1.manage-unit-files",
-                        /* details= */ NULL,
-                        &m->polkit_registry,
-                        error);
-}
-
-int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
-        return bus_verify_polkit_async(
-                        call,
-                        "org.freedesktop.systemd1.reload-daemon",
-                        /* details= */ NULL,
-                        &m->polkit_registry, error);
-}
-
-int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
-        return bus_verify_polkit_async(
-                        call,
-                        "org.freedesktop.systemd1.set-environment",
-                        /* details= */ NULL,
-                        &m->polkit_registry,
-                        error);
-}
-int bus_verify_bypass_dump_ratelimit_async(Manager *m, sd_bus_message *call, sd_bus_error *error) {
-        return bus_verify_polkit_async(
-                        call,
-                        "org.freedesktop.systemd1.bypass-dump-ratelimit",
-                        /* details= */ NULL,
-                        &m->polkit_registry,
-                        error);
-}
-
 uint64_t manager_bus_n_queued_write(Manager *m) {
         uint64_t c = 0;
         sd_bus *b;
diff --git a/src/core/dbus.h b/src/core/dbus.h
index ae75404076..d00c14d3b7 100644
--- a/src/core/dbus.h
+++ b/src/core/dbus.h
@@ -23,12 +23,6 @@ int bus_track_coldplug(Manager *m, sd_bus_track **t, bool recursive, char **l);
 
 int bus_foreach_bus(Manager *m, sd_bus_track *subscribed2, int (*send_message)(sd_bus *bus, void *userdata), void *userdata);
 
-int bus_verify_manage_units_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
-int bus_verify_manage_unit_files_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
-int bus_verify_reload_daemon_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
-int bus_verify_set_environment_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
-int bus_verify_bypass_dump_ratelimit_async(Manager *m, sd_bus_message *call, sd_bus_error *error);
-
 int bus_forward_agent_released(Manager *m, const char *path);
 
 uint64_t manager_bus_n_queued_write(Manager *m);