The Prophet salAllahu ‘alayhi wa sallam used siwaak on numerous occasions:
– For every prayer, as the Prophet salAllahu ‘alayhi wa sallam said, “Had it not been that I might cause hardship to my people, I would have ordered you to use a Siwaak for every prayer.”
The Muslim may use a siwaak many times during the night and day – for the five obligatory prayers, Ar-Rawaatib Sunnah, prayers of Ad-Duha, Al-Witr etc.
– When entering the house.
– When reciting the Qur’an.
– When the smell of the mouth changes.
– When waking up.
– When performing wudhu.
Siwaak is a purified for the mouth and pleasing to the Lord.
The Benefits of Implementing this Sunnah:
The believer attains the pleasure of Allah subhanahu wa ta`ala. It is a purification of the mouth. Modern medicine has discovered that siwaak contains many substances that are of benefit to humans especially for the gums. There are substances that counteract germs act as purifiers, have cleaning properties for the teeth and freshen the smell and taste of the mouth.
[Book: More than 1000 Sunan Every Day and Night (Adhkar Min Alf Sunnah Fee Al-Yawm Wa Al-Laylah, Dar-us-Salaam Publications)]