Musannaf Ibn Abi Shaybah 8517 — The fear prayer: how many rakahs it is

Masruq said: In the fear prayer, the imam will stand and the people will form two rows behind him. Then the imam will bow, and the people of the row behind him will also bow. Then the imam will prostrate, and the people of the row with him will also prostrate. Then when the imam stands for the second rak'ah, the people of this row will move back, and the people of the other group will come and stand in their place. The imam will bow and prostrate with them, while the others remain standing. Then these will stand and make up one rak'ah each. In this way the imam will have two rak'ahs in congregation and the people one rak'ah each, then they will make up the second rak'ah.