Sahih Bukhari
Good Manners and Form (Al-Adab)
Volume: 008 / Book Number: 073 / Hadith Number: 221
Narrated Anas:
Once Um Sulaim was (with the women who were) in charge of the luggage on a journey, and Anjashah, the slave of the Prophet, was driving their camels (very fast). The Prophet said, "O Anjash! Drive slowly (the camels) with the glass vessels (i.e., ladies)."