Sahih Muslim 590
صحيح مسلم#590Sahihحَدَّثَنَا أَبُو كُرَيْبٍ، مُحَمَّدُ بْنُ الْعَلاَءِ حَدَّثَنَا ابْنُ بِشْرٍ، عَنْ مِسْعَرٍ، عَنِ الْمِقْدَامِ بْنِ شُرَيْحٍ، عَنْ أَبِيهِ، قَالَ سَأَلْتُ عَائِشَةَ قُلْتُ بِأَىِّ شَىْءٍ كَانَ يَبْدَأُ النَّبِيُّ صلى الله عليه وسلم إِذَا دَخَلَ بَيْتَهُ قَالَتْ بِالسِّوَاكِ .
Miqdam b. Shuraih narrated it from his father who said:I asked A'isha what Allah's Apostle (ﷺ) did first when he entered his house, and she replied: He used tooth-stick (first of all)
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 2:57