Abu Musa al-Asha'ari · The Book of Purification

I went to the Apostle (ﷺ) and found one end of the tooth-stick upon his tongue (i. e. he was rinsing his mouth).

"I came to the Messenger of Allah (ﷺ) when he was using the Siwak, and the end of the Siwak was on his toungue, and he was saying, "'A','a'."

"I came to the Prophet (ﷺ) when he was using the Siwak and with me were two men of the Ash'aris - one on my right and the other on my left - who were seeking to be appointed as officials. I said: 'By the One Who sent you as a Prophet with the truth, they did not tell me why they wanted to come with me and I did not realize that they were seeking to be appointed as…