It is narrated from Hazrat Aisha that when the Prophet (peace be upon him) would wake up at night after sleeping, he would use the miswak, perform ablution, and pray eight rak'ahs, sitting and saying salam after every two rak'ahs. Then he would pray five rak'ahs in such a way that he would sit only in the fifth rak'ah and say salam while sitting in it.