The Messenger of Allah ﷺ led us in prayer in the time of danger. They (the people) stood in two rows. One row was behind the Messenger of Allah ﷺ and the other faced the enemy. The Messenger of Allah ﷺ led them in one rak'ah,and then the other section came and took their place; they went and faced the enemy. The Prophet ﷺ led them in one rak'ah and uttered the salutation. They stood up and prayed the second rak'ah by themselves and uttered the salutation and went away; they took the place of the other section facing the enemy. They came back and took their place. They prayed one rak'ah by themselves and then uttered the salutation.  

صَلَّى بِنَا رَسُولُ اللَّهِ ﷺ صَلاَةَ الْخَوْفِ فَقَامُوا صَفَّيْنِ صَفٌّ خَلْفَ رَسُولِ اللَّهِ ﷺ وَصَفٌّ مُسْتَقْبِلَ الْعَدُوِّ فَصَلَّى بِهِمْ رَسُولُ اللَّهِ ﷺ رَكْعَةً ثُمَّ جَاءَ الآخَرُونَ فَقَامُوا مَقَامَهُمْ وَاسْتَقْبَلَ هَؤُلاَءِ الْعَدُوَّ فَصَلَّى بِهِمُ النَّبِيُّ ﷺ رَكْعَةً ثُمَّ سَلَّمَ فَقَامَ هَؤُلاَءِ فَصَلَّوْا لأَنْفُسِهِمْ رَكْعَةً ثُمَّ سَلَّمُوا ثُمَّ ذَهَبُوا فَقَامُوا مَقَامَ أُولَئِكَ مُسْتَقْبِلِي الْعَدُوِّ وَرَجَعَ أُولَئِكَ إِلَى مَقَامِهِمْ فَصَلَّوْا لأَنْفُسِهِمْ رَكْعَةً ثُمَّ سَلَّمُوا  

The Prophet of Allah ﷺ uttered takbir and both rows uttered takbir together. Abu Dawud said: This tradition has been narrated by al-Thawri to the same effect on the authority of Khusaif. 'Abd al-Rahman b. Samurah also prayed in like manner. But the section which he (the Prophet) led in one rak'ah and then uttered the salutation and went and took the place of their companions. They came and prayed one rak'ah by themselves. Then they returned to their place and they prayed (one rak'ah) by themselves. Abu Dawud said: Muslim b. Ibrahim reported from 'Abd al-Samad b. Habib on the authority of his father that they had fought a battle at Kabul along with 'Abd al-Rahman b. Samurah. He led us in prayer in time of danger.  

فَكَبَّرَ نَبِيُّ اللَّهِ ﷺ وَكَبَّرَ الصَّفَّانِ جَمِيعًا