Musannaf Ibn Abi Shayba 13:1749

Abu Bakr narrated to us, he said: Yahya ibn Yaman narrated to us, from Ma'mar, from al-Zuhri, from Sa'id ibn al-Musayyib, he said: Whoever gives a gift to someone who is not a relative, he has the right to take it back as long as he has not been compensated for it.