Tha’labah bin Zahdam says that once we were in Tabaristan with Hazrat Sa’eed bin Aas (may Allah be pleased with him). He asked the people,“Who among you has performed the Salat al-Khawf (prayer of fear) with the Prophet Muhammad (peace and blessings be upon him)?”Hazrat Hudhaifah (may Allah be pleased with him) replied,“I have, and it was like this: the people formed two rows behind the Prophet Muhammad (peace and blessings be upon him). One row stood facing the enemy, and one row stood behind the Prophet Muhammad (peace and blessings be upon him) for prayer. The Prophet Muhammad (peace and blessings be upon him) led those people in one rak’ah, then they retreated backwards to the place of those who were standing in front of the enemy, and those people came and stood behind the Prophet Muhammad (peace and blessings be upon him) in their place. The Prophet Muhammad (peace and blessings be upon him) led them in the second rak’ah and then concluded the prayer with salam.”