Musannaf Ibn Abi Shayba 9:1645

Waki' narrated to us, from Hammam ibn Yahya, from Qatada, from al-Nadr ibn Anas, from Bashir ibn Nahik, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever has two wives and inclines toward one of them over the other, he will be resurrected on the Day of Resurrection while one of his two sides is dragging."