Mukhtasar Muslim

`Sayyiduna Anas bin Malik (may Allah be pleased with him) says that` when (a man) marries a virgin and he already has a previously married woman in his marriage, then he should stay with the virgin for seven days (and after that, he should assign turns). And when he marries a previously married woman while he already has a virgin, then he should stay with her for three days. Khalid (the narrator of the hadith) said: If I say that this narration is marfu‘ (attributed to the Prophet), then that would also be true, but Anas (may Allah be pleased with him) used these words and said: This is the Sunnah.