Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Qais (may Allah be pleased with him) that the Holy Prophet (peace and blessings be upon him) appointed Hazrat Amr bin Al-Aas (may Allah be pleased with him) as the commander in the expedition of Dhat al-Salasil and sent him forth. His army suffered from severe cold. Hazrat Amr bin Al-Aas (may Allah be pleased with him) ordered that no one should light a fire. Then they fought the enemy. When the army returned, they complained to the Prophet (peace and blessings be upon him) about this matter. Hazrat Amr bin Al-Aas (may Allah be pleased with him) submitted, "O Messenger of Allah! My army was small, and I feared that if a fire was lit, the enemy would see our small numbers. I also forbade them from pursuing the enemy for the same reason, lest an enemy be lying in ambush on the mountain." The narrator states that the Prophet (peace and blessings be upon him) liked this strategy and tactic very much.