Sahih Muslim , Hadith 1461 ⓘ

Anas b. Malik reported: When anyone who has already a wife marries virgin, he should stay with her for seven nights (and then turn to his other wife), but when anyone having a virgin with him (as his wife) marries a woman who has been previously married he should stay with her for three nights. Khalid (one of the narrators) said. If I were to say that it could be directly traced to the Prophet. I would have told the truth, but he (Hadrat Anas) said: Such is the tradition.

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا هُشَيْمٌ، عَنْ خَالِدٍ، عَنْ أَبِي قِلاَبَةَ، عَنْ أَنَسِ بْنِ، مَالِكٍ قَالَ إِذَا تَزَوَّجَ الْبِكْرَ عَلَى الثَّيِّبِ أَقَامَ عِنْدَهَا سَبْعًا وَإِذَا تَزَوَّجَ الثَّيِّبَ عَلَى الْبِكْرِ أَقَامَ عِنْدَهَا ثَلاَثًا ‏.‏ قَالَ خَالِدٌ وَلَوْ قُلْتُ إِنَّهُ رَفَعَهُ لَصَدَقْتُ وَلَكِنَّهُ قَالَ السُّنَّةُ كَذَلِكَ ‏.‏

Abu Qilaba reported on the authority of Anas: It is the Sunnah to stay with a virgin (after having married her) for a week. Khalid (one of the narrators) said: If wish I can say that it can be traced up to the Prophet.

وَحَدَّثَنِي مُحَمَّدُ بْنُ رَافِعٍ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا سُفْيَانُ، عَنْ أَيُّوبَ، وَخَالِدٍ، الْحَذَّاءِ عَنْ أَبِي قِلاَبَةَ، عَنْ أَنَسٍ، قَالَ مِنَ السُّنَّةِ أَنْ يُقِيمَ، عِنْدَ الْبِكْرِ سَبْعًا ‏.‏ قَالَ خَالِدٌ وَلَوْ شِئْتُ قُلْتُ رَفَعَهُ إِلَى النَّبِيِّ صلى الله عليه وسلم ‏.‏