When the Prophet (sal Allaahu alayhi wa sallam ) went to the privy, I took to him water in a small vessel or a skin, and he cleansed himself. He then wiped his hand on the ground. I then took to him another vessel and he performed ablution. Abu Dawud said : The tradition is transmitted by al-Aswad b. 'Amir is more perfect.
(the Prophet, sal Allaahu alayhi wa sallam ) as saying : Were it not that I might oeverburdern the believers, I would order them to delay the night ('isha ) prayer and use the tooth-stick at the time of every prayer.
I heard the Messenger of Allah (ﷺ) say: Were it not hard on my ummah, I would order them to use the tooth-stick at the time of every prayer. AbuSalamah said: Zayd ibn Khalid used to attend the prayers in the mosque with his tooth-stick on his ear where a clerk carries a pen, and whenever he got up for prayer he used it.
Muhammad ibn Yahya ibn Habban asked Abdullah ibn Abdullah ibn Umar about the reason for Ibn Umar's performing ablution for every prayer, whether he was with or without ablution. He replied: Asma', daughter of Zayd ibn al-Khattab, reported to me that Abdullah ibn Hanzalah ibn AbuAmir narrated to her that the Messenger of Allah (ﷺ) was earlier commanded to perform ablution for every prayer whether or not he was with ablution. When it became a burden for him, he was ordered to use tooth-stick for every prayer. As Ibn Umar thought that he had the strength (to perform the ablution for every prayer), he did not give up performing ablution for every prayer. Abu Dawud said: Ibrahim b. Sa'd narrated this tradition on the authority of Muhammad b. Ishaq, and there he mentions the name of 'Ubaid Allah b. 'Abd Allah (instead of 'Abd Allah b. 'Abd Allah b. 'Umar)
On the authority of his father ( Abu Musa al-Ash'ari), reported (according to the version of Musaddad) : We came to the Apostle of Allaah (sal Allaahu alayhi wa sallam) to provide us with a mount, and found him using the tooth-stick, its one end being at his tongue (i.e. he wsa rinsing his mouth). According to the version of Sulaiman it goes : I entered upon the Prophet (sal Allaahu alayhi wa sallam ) who was using the tooth-stick, and had it placed at one side of his tongue, producing a gurgling sound. Abu Dawud said : Musaddad said that the tradition was a lengthy but he shortened it.
The Messenger of Allah (ﷺ) was using the tooth-stick, when two men, one older than the other, were with him. A revelation came to him about the merit of using the tooth-stick. He was asked to show proper respect and give it to the elder of the two.
"The Prophet of Allah (ﷺ) would clean his teeth with the Siwak, then he would give me the Siwak in order to wash it. So I would first use it myself, then wash it and return it.
The Messenger of Allah (ﷺ) said: Ten are the acts according to fitrah (nature): clipping the moustache, letting the beard grow, using the tooth-stick, cleansing the nose (Al-Istinshaq) with water, cutting the nails, washing the finger joints, plucking the hair under the arm-pits, shaving the pubes, and cleansing one's private parts (after easing or urinating) with water. The narrator said: I have forgotten the tenth, but it may have been rinsing the mouth.