It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) sent us out in an expedition. He (peace and blessings be upon him) said: "If you find two particular men of the Quraysh, burn them with fire." Then when we were about to leave, the Messenger of Allah (peace and blessings be upon him) said: "I had ordered you to burn so-and-so and so-and-so with fire, but none punishes with fire except Allah, the Lord of Might. If you find them, kill them."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18063