مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 387
Purification
The tooth-stick - Section 3
وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَقَدْ أَكْثَرْتُ عَلَيْكُمْ فِي السِّوَاك» رَوَاهُ البُخَارِيّ
Anas reported God’s messenger as saying, “I have said much to you about the tooth-stick.” Bukhari transmitted it.
Mishkat al-Masabih, 387صَحِيحٌ (الألباني)