Mishkat al-Masabih #1343

Yazid b. Ruman told on the authority of Salih b. al-Khawwat on the authority of one who prayed in time of danger along with God’s Messenger at the battle of Dhat ar-Riqa'* that a section formed a line along with him and a section faced the enemy. He led the section which was along with him in a rak'a, then remained standing while they finished the prayer by themselves. They then departed and drew up in line facing the enemy, and when the other party came he led them in the remaining rak'a of his prayer, after which he remained seated while they finished the prayer by themselves. He then led them in uttering the salutation. * This was during an expedition against some sections of Ghatafan in 4 A.H (Bukhari and Muslim.) Bukhari rendered it also by another line from al-Qasim from Salih b. al-Khawwat from Sahl b. Abu Hathma from the Prophet.