IBNHIBBAN 1066:
from Anas b. Mālik —
"The Messenger of Allah ﷺ said: 'I have indeed urged you with regard to the Siwak.'" (Using translation from Nasāʾī 6)
ابن حبّان ١٠٦٦:
عن انس بن مالك —
قَالَ رَسُولُ اللَّهِ ﷺ «أَكْثَرْتُ عَلَيْكُمْ فِي السِّوَاكِ»