Sayyiduna Abu Ayyash al-Zuraqi (may Allah be pleased with him) said: We went on a campaign with the Messenger of Allah (peace and blessings be upon him), and the idolaters met him (peace and blessings be upon him) at Usfan, and that day their cavalry was commanded by Khalid bin al-Walid. The time of the Zuhr prayer came, so the mu'adhdhin called the adhan and gave the iqamah for the prayer. The idolaters intended to attack us, then some of them said: "Now a prayer is coming upon them that is dearer to them than their children" - they meant the Asr prayer. So Jibril (peace be upon him) came with the verses about the prayer of fear. Then, when the time of prayer came, the mu'adhdhin called the adhan and gave the iqamah. The Messenger of Allah (peace and blessings be upon him) stepped forward and we formed two rows behind him (peace and blessings be upon him), and that day the idolaters were on the side of the qiblah. The Messenger of Allah (peace and blessings be upon him) bowed and we bowed too, then he (peace and blessings be upon him) prostrated and the near row prostrated too, while the rear row remained standing. When these had finished their prostration, the rear row prostrated. So the idolaters began to blame one another. Abu Ayyash said: Then he (peace and blessings be upon him) led us in the same way in the land of Banu Sulaym as well.
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5116