From Sahih Muslim (Hadith 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
Reference: Muslim 6036