Whoever catches up with the imam when he is bowing, and bows with him, that is regarded as a rak`ah for him, according to the view of the majority of scholars, even if he did not recite al-Fatihah.

According to the majority of scholars, the 4-Rak`ah Sunnah prayer should be performed in sets of two, with Taslim after every two Rak`ahs. This ruling is based on the Hadith where the Prophet said, "The prayers of the day and night are to be offered two by two."