The Messenger of Allah said: "Indeed the conditions most deserving to be fulfilled are those that make the private parts lawful among you."
Jami` at-Tirmidhi Book 11, Hadith 49
← Previous Hadith "The Messenger of Allah prohibited that a woman be married along with her paternal aunt, or the paternal aunt along with her brother's daughter, or a woman with her maternal aunt, or the maternal aunt along with her sister's daughter, and the younger is not to be married with the older, nor the older with the younger."

Jami` at-Tirmidhi Book 11, Hadith 48 Next Hadith → "Ghilan bin Salamah Ath-Thaqafi accepted Islam and he had ten wives in Jahiliyyah who accepted Islam along with him. So the Prophet ordered (him) to chose four (of them)."

Jami` at-Tirmidhi Book 11, Hadith 50