Musnad Abu Ya'la al-Mawsili 110:87

Mus'ab bin 'Abdullah al-Zubayri narrated to us, he said: Al-Mughirah bin 'Abd al-Rahman and 'Abd al-'Aziz bin Muhammad narrated to me, from 'Abd al-Rahman bin al-Harith bin 'Abdullah bin 'Ayyash Abu al-Mughirah, from Ibn Abi Najih, from Mujahid, from Ibn 'Abbas: That the Messenger of Allah (ﷺ) forbade having intercourse with pregnant women on the day of Khaybar, and [he forbade] watering the crops of someone else, and [he forbade] the selling of war spoils before they are divided, and [he forbade] eating the meat of domestic donkeys, and [he forbade] every beast of prey that has fangs.