Yazid b. Ruman told on the authority of Salih b. Khawwat on the authority of one who prayed in time of danger with Messenger of Allah (may peace he upon him) at the Battle of Dhat ar-Riqa' that a group formed a row and prayed along with him, and a group faced the enemy. He led the group which was along with him in a rak'ah, then remained standing while they finished the prayer by themselves. Then they departed and formed a row facing the enemy. Then the second group came and he led them in the remaining rak'ah, after which he remained seated while they finished the prayer themselves. He then led them in salutation.  

عَنْ صَالِحِ بْنِ خَوَّاتٍ عَمَّنْ صَلَّى مَعَ رَسُولِ اللَّهِ ﷺ يَوْمَ ذَاتِ الرِّقَاعِ صَلاَةَ الْخَوْفِ أَنَّ طَائِفَةً صَفَّتْ مَعَهُ وَطَائِفَةٌ وِجَاهَ الْعَدُوِّ فَصَلَّى بِالَّذِينَ مَعَهُ رَكْعَةً ثُمَّ ثَبَتَ قَائِمًا وَأَتَمُّوا لأَنْفُسِهِمْ ثُمَّ انْصَرَفُوا فَصَفُّوا وِجَاهَ الْعَدُوِّ وَجَاءَتِ الطَّائِفَةُ الأُخْرَى فَصَلَّى بِهِمُ الرَّكْعَةَ الَّتِي بَقِيَتْ ثُمَّ ثَبَتَ جَالِسًا وَأَتَمُّوا لأَنْفُسِهِمْ ثُمَّ سَلَّمَ بِهِمْ  

One group had formed a row behind him and another group faced the enemy. He led those who were with him in praying one rak'ah, then he remained standing and they completed the prayer by themselves. Then they moved away and formed a row facing the enemy, and the other group came and he led them in praying the rak'ah that was left for him, then he remained sitting while they completed the prayer by themselves, then he said the taslim with them.  

عَنْ صَالِحِ بْنِ خَوَّاتٍ عَمَّنْ صَلَّى مَعَ رَسُولِ اللَّهِ ﷺ يَوْمَ ذَاتِ الرِّقَاعِ صَلاَةَ الْخَوْفِ أَنَّ طَائِفَةً صَفَّتْ مَعَهُ وَطَائِفَةٌ وُجَاهَ الْعَدُوِّ فَصَلَّى بِالَّذِينَ مَعَهُ رَكْعَةً ثُمَّ ثَبَتَ قَائِمًا وَأَتَمُّوا لأَنْفُسَهِمْ ثُمَّ انْصَرَفُوا فَصَفُّوا وُجَاهَ الْعَدُوِّ وَجَاءَتِ الطَّائِفَةُ الأُخْرَى فَصَلَّى بِهِمُ الرَّكْعَةَ الَّتِي بَقِيَتْ مِنْ صَلاَتِهِ ثُمَّ ثَبَتَ جَالِسًا وَأَتَمُّوا لأَنْفُسِهِمْ ثُمَّ سَلَّمَ بِهِمْ  

On the authority of a person who offered the prayer in time of danger along with the Messenger of Allah ﷺ at the battle of Dhat al-Riqa. One section of people stood in the row of prayer along with the Messenger of Allah ﷺ and the other section remained standing in front of the enemy. He led those who were with him in one rak'ah and remained standing (in his place) and they completed (the second rak'ah) by themselves. Then they turned away and arrayed before the enemy. Thereafter the other section came and he led them in the rak'ah which remained from his prayer. He then remained sitting (in his place) and they completed their one rak'ah by themselves. He then uttered the salutation along with them. Malik said: I like the tradition reported by Yazid b. Ruman (i.e. the present tradition) more than (other versions) I heard. (Using translation from Abū Dāʾūd 1238)  

عَنْ صَالِحِ بْنِ خَوَّاتِ بْنِ جُبَيْرٍ عَمَّنْ صَلَّى مَعَ رَسُولِ اللهِ ﷺ يَوْمِ ذَاتَ الرِّقَاعِ صَلَاةَ الْخَوْفِ أَنَّ طَائِفَةً صَفَّتْ مَعَهُ وَطَائِفَةً وِجَاهَ الْعَدُوِّ فَصَلَّى بِالَّتِي مَعَهُ رَكْعَةً ثُمَّ ثَبَتَ قَائِمًا وَأَتَمُّوا لِأَنْفُسِهِمْ ثُمَّ انْصَرَفُوا فَصَفُّوا وِجَاهَ الْعَدُوِّ وَجَاءَتِ الطَّائِفَةُ الْأُخْرَى فَصَلَّى بِهِمُ الرَّكْعَةَ الَّتِي بَقِيَتْ مِنْ صَلَاتِهِ ثُمَّ ثَبَتَ جَالِسًا وَأَتَمُّوا لِأَنْفُسِهِمْ ثُمَّ سَلَّمَ قَالَ مَالِكٌ وَهَذَا أَحَبُّ مَا سَمِعْتُ إِلَيَّ فِي صَلَاةِ الْخَوْفِ  

On the authority of a person who offered the prayer in time of danger along with the Messenger of Allah ﷺ at the battle of Dhat al-Riqa. One section of people stood in the row of prayer along with the Messenger of Allah ﷺ and the other section remained standing in front of the enemy. He led those who were with him in one rak'ah and remained standing (in his place) and they completed (the second rak'ah) by themselves. Then they turned away and arrayed before the enemy. Thereafter the other section came and he led them in the rak'ah which remained from his prayer. He then remained sitting (in his place) and they completed their one rak'ah by themselves. He then uttered the salutation along with them. Malik said: I like the tradition reported by Yazid b. Ruman (i.e. the present tradition) more than (other versions) I heard. (Using translation from Abū Dāʾūd 1238)  

عَنْ صَالِحِ بْنِ خَوَّاتٍ عَمَّنْ صَلَّى مَعَ رَسُولِ اللهِ ﷺ يَوْمَ ذَاتِ الرِّقَاعِ صَلَاةَ الْخَوْفِ أَنَّ طَائِفَةً صَفَّتْ مَعَهُ وَطَائِفَةٌ وِجَاهَ الْعَدُوِّ فَصَلَّى بِالَّذِينَ مَعَهُ رَكْعَةً ثُمَّ ثَبَتَ قَائِمًا وَأَتِمُّوا لِأَنْفُسِهِمْ ثُمَّ انْصَرَفُوا فَصَفُّوا وِجَاهَ الْعَدُوِّ وَجَاءَتِ الطَّائِفَةُ الْأُخْرَى فَصَلَّى بِهِمُ الرَّكْعَةَ الَّتِي بَقِيَتْ مِنْ صَلَاتِهِ ثُمَّ ثَبَتَ جَالِسًا وَأَتَمُّوا لِأَنْفُسِهِمْ ثُمَّ سَلَّمَ بِهِمْ