Musannaf Ibn Abi Shayba 33:277

Abu Mu'awiyah narrated to us, he said: Al-A'mash narrated to us, from 'Amr ibn Murrah, from Abu al-Bakhtari, who said: Ali said to his mother, Fatimah bint Asad: "Take care of the service outside for Fatimah, daughter of the Messenger of Allah, such as carrying water and [attending to] needs." "And she shall take care of the work inside the house for you: kneading, baking, and grinding."