صحيح مسلم 6036

Anas reported that Allah's Messenger (ﷺ) had in one of his journeys his black slave who was called Anjasha along with him. He goaded by singing the songs of camel-driver. Thereupon Allah's Messenger (ﷺ) said:Anjasha, drive slowly as you are driving (the mounts who are carrying) glass vessels

Rapporté par Anas رضي الله عنه : « Lors d’un de ses voyages, le Messager d’Allah ﷺ avait avec lui son esclave noir appelé Anjasha, qui chantait pour encourager les chameaux. Le Messager d’Allah ﷺ lui a dit : “Anjasha, va doucement, car tu conduis des montures qui transportent des récipients fragiles.” »