مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 377
Purification
The tooth-stick - Section 1
وَعَن شُرَيْح بن هَانِئ قَالَ: سَأَلْتُ عَائِشَةَ: بِأَيِّ شَيْءٍ كَانَ يَبْدَأُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا دخل بَيته؟ قَالَت: بِالسِّوَاكِ. رَوَاهُ مُسلم
Shuraih b. Hani’ said that he asked ‘A'isha what God’s messenger did first when he entered his house, and she replied that he used the tooth-stick. Muslim transmitted it.
Mishkat al-Masabih, 377صَحِيح (الألباني)