The Messenger of Allah said: "The distinction between the lawful and the unlawful is the Duff and the voice."
Jami` at-Tirmidhi Book 11, Hadith 9
← Previous Hadith Al-Mughirah bin Shu'bah proposed to a woman, so the Prophet said: "Look at her, for indeed that is more likely to make things better between the two of you."

Jami` at-Tirmidhi Book 11, Hadith 8 Next Hadith → The Messenger of Allah said: "Publicize this marriage, and hold it in the Masjid, and beat the Duff for it."

Jami` at-Tirmidhi Book 11, Hadith 10