When a man who has a wife married a virgin he should stay with her seven nights ; if he marries to a woman who has been previously married he should stay with her three nights. (The narrator said:) If I say that he (Anas) narrated this tradition from the Prophet (ﷺ) I shall be true. But he said: The Sunnah is so-and-so.
Sunan Abi Dawud Book 12, Hadith 79
← Previous Hadith When the Messenger of Allah (ﷺ) married Safiyyah, he stayed with her three nights. The narrator 'Uthman added: She was non virgin (previously married). He said: This tradition has been narrated to me by Hushaim, reported by Humaid, and transmitted by Anas.

Sunan Abi Dawud Book 12, Hadith 78 Next Hadith → When Ali married Fatimah, the Prophet (ﷺ) said to him: Give her something. He said: I have nothing with me. He said: Where is your Hutamiyyah (coat of mail).

Sunan Abi Dawud Book 12, Hadith 80