FIRST THING THE PROPHET, praise and peace be upon him, DID UPON ENTERING THE HOUSE H 1223 "I (Suraih, the son of Hani) asked Lady Ayesha, may Allah be pleased with her, what was the first thing the Messenger of Allah, praise and peace be upon him, did upon entering his house. She answered, 'He brushed his teeth.'" R 1223 Muslim with a chain up to Shuraih son of Hani who related this.
1200- وعن شريح بن هانىءٍ ، قَالَ : قلت لعائشة رضي اللهُ عنها : بأَيِّ شَيْءٍ كَانَ يَبْدَأُ النَّبِيُّ صلى الله عليه وآله وسلم إِذَا دَخَلَ بَيْتَهُ ؟ قالت : بِالسِّوَاكِ . رواه مسلم .