Hadith 3:96
Anas reported God’s messenger as saying, “I have said much to you about the tooth-stick.” Bukhari transmitted it.
وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَقَدْ أَكْثَرْتُ عَلَيْكُمْ فِي السِّوَاك» رَوَاهُ البُخَارِيّ
Original Reference: Mishkat al-Masabih 387