Sahl b. Abu Hathma reported that the Messenger of Allah ﷺ led his Companions in prayer in danger. He made them stand in two rows behind him. He led them who were close to him in one rak'ah. He then stood up and kept standing till those who were behind them observed one rak'ah. Then they (those standing in the second row) came in front and those who were in front went into the rear. He then led them In one rak'ah. He then sat down, till those who were behind him observed one rak'ah and then pronounced salutation.  

أَنَّ رَسُولَ اللَّهِ ﷺ صَلَّى بِأَصْحَابِهِ فِي الْخَوْفِ فَصَفَّهُمْ خَلْفَهُ صَفَّيْنِ فَصَلَّى بِالَّذِينَ يَلُونَهُ رَكْعَةً ثُمَّ قَامَ فَلَمْ يَزَلْ قَائِمًا حَتَّى صَلَّى الَّذِينَ خَلْفَهُمْ رَكْعَةً ثُمَّ تَقَدَّمُوا وَتَأَخَّرَ الَّذِينَ كَانُوا قُدَّامَهُمْ فَصَلَّى بِهِمْ رَكْعَةً ثُمَّ قَعَدَ حَتَّى صَلَّى الَّذِينَ تَخَلَّفُوا رَكْعَةً ثُمَّ سَلَّمَ  

The Prophet ﷺ prayed in time of danger and divided them (the people) behind him in two rows. He then led those who were near him in one rak'ah. Then he stood and remained standing till those who were in second row offered one rak'ah. Thereafter they came forward and those who were in front of them (in the first row) stepped backward. The Prophet ﷺ led them in one rak'ah of prayer. He sat down till those who were in the second row completed on rak'ah. He then uttered the salutation.  

أَنَّ النَّبِيَّ ﷺ صَلَّى بِأَصْحَابِهِ فِي خَوْفٍ فَجَعَلَهُمْ خَلْفَهُ صَفَّيْنِ فَصَلَّى بِالَّذِينَ يَلُونَهُ رَكْعَةً ثُمَّ قَامَ فَلَمْ يَزَلْ قَائِمًا حَتَّى صَلَّى الَّذِينَ خَلْفَهُمْ رَكْعَةً ثُمَّ تَقَدَّمُوا وَتَأَخَّرَ الَّذِينَ كَانُوا قُدَّامَهُمْ فَصَلَّى بِهِمُ النَّبِيُّ ﷺ رَكْعَةً ثُمَّ قَعَدَ حَتَّى صَلَّى الَّذِينَ تَخَلَّفُوا رَكْعَةً ثُمَّ سَلَّمَ