Musnad Abu Ya'la al-Mawsili 117:164

Abu Bakr ibn Zanjawayh narrated to us, Abd al-Razzaq narrated to us, Ma'mar informed us, from Thabit, from Anas, who said: Al-Mughirah ibn Shu'bah wanted to marry a woman, so he mentioned that to the Prophet, peace and blessings of Allah be upon him. He said: "Go and look at her, for it is more likely that there will be harmony between you." He said: So he did that, and he married her, and he mentioned her compatibility.