Musnad Abu Ya'la al-Mawsili 139:17

Abu Khaythama narrated to us, Ismail narrated to us, from Sulayman al-Taymi, Anas ibn Malik narrated to us: He said: Umm Sulaym was with the wives of the Prophet, may God bless him and grant him peace, on a journey. The Prophet, may God bless him and grant him peace, came upon them while he was driving them [the camels]—he was a driver for them—and he said: "O Anjasha, gently; drive the glass vessels [the women] gently."