I came to the Prophet ﷺ and found him brushing his teeth with a siwak in his hand, saying, "Ugh, ugh," with the siwak in his mouth, as though he were gagging.
حدثنا أبو النعمان قال حدثنا حماد بن زيد عن غيلان بن جرير
أتيت النبي ﷺ فوجدته يستن بسواك بيده يقول أع أع والسواك في فيه كأنه يتهوع