Musnad Abu Ya'la al-Mawsili 162:10

Amr ibn al-Dahhak narrated to us, my father narrated to us, from Shu'bah, from Mushash, from 'Ata, from Ibn Abbas, from al-Fadl ibn Abbas: That the Messenger of Allah, may Allah bless him and grant him peace, commanded the weak ones of Banu Hashim to depart from Jam' (Muzdalifah) by night.