(1) The miswak should not be longer than one span and should not be thicker than a finger. [Bahrur Raeq]
(2) The miswak should be rubbed on the gums at least three times and should be dipped in water every times.
(3) In case finger is to be used in place of miswak, then the upper and lower jaws on the right side should be cleaned with the thumb and the left side should be cleaned similarly with the first finger.
HOW TO HOLD THE MISWAK:
(4) The miswak should be held in such a manner that the small finger is below the miswak and the thumb is below the tip of it. The other finger should be on its upper side. [Shami] The miswak should be rubbed on the teeth from right to left and back. On the tongue it should be rubbed lengthwise. The inner and the outer sides of the teeth, the jaws and the upper and the lower sides of the mouth should also be clean with the miswak. [Tahavi]
OCCASIONS WHEN THE USE OF MISWAK (TOOTH – STICK) IS MASUN OR MUSTAHABB:
1) On awakening after sleep.
2) While performing Wudu (ablution).
3) Before recitation QURAAN.
4) Before reading or teaching the holy traditions.
5) When the mouth smells foul or the teeth appear to be dis-coloured.
6) When standing up if a long interval has elapsed between Wudu and Salaah.
7) Before meditation.
8) Before entering the Ka’bah or the Hateem.
9) After entering one’s house.
10) Before participating in any sacred gathering.
11) On getting hungry or thirsty.
12) At the time of taking Sehari (light food before fasting).
13) Before taking meals.
14) Before setting out for a journey.
15) On returning home from a journey.
16) Before going to bed.
17) On feeling the intimations of death. [Al-Targhib-wa-At-Tarhib]