"The Messenger of Allah used to pray in the night (Qiyamul-Lail) two Rak'ah by two, then when he finished he would use the tooth stick." (Using translation from Ibn Mājah 288)

كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي مِنَ اللَّيْلِ رَكْعَتَيْنِ ثُمَّ يَنْصَرِفُ فَيَسْتَاكُ