Sunan an-Nasa'i 3507
سنن النسائي#3507Sahihأَخْبَرَنَا نَصْرُ بْنُ عَلِيِّ بْنِ نَصْرٍ، عَنْ عَبْدِ اللَّهِ بْنِ دَاوُدَ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنِ الْمِسْوَرِ بْنِ مَخْرَمَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم أَمَرَ سُبَيْعَةَ أَنْ تَنْكِحَ إِذَا تَعَلَّتْ مِنْ نِفَاسِهَا .
It was narrated from Al-Miswar bin Makhramah that the Prophet commanded Sabai'ah to get married when her Nifas ended
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 27:119