Jami` at-Tirmidhi 126
جامع الترمذي#126Sahihحَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا شَرِيكٌ، عَنْ أَبِي الْيَقْظَانِ، عَنْ عَدِيِّ بْنِ ثَابِتٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ قَالَ فِي الْمُسْتَحَاضَةِ " تَدَعُ الصَّلاَةَ أَيَّامَ أَقْرَائِهَا الَّتِي كَانَتْ تَحِيضُ فِيهَا ثُمَّ تَغْتَسِلُ وَتَتَوَضَّأُ عِنْدَ كُلِّ صَلاَةٍ وَتَصُومُ وَتُصَلِّي " .
Adiyy bin Thabit narrated from his father, that :the Prophet said about the Mustahadah that she should: "Leave the Salat for the days of her period which she menstruates in, then perform Ghusl, and perform Wudu for every Salat, and observe Saum and perform Salat
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:
In-book reference: 1:126