Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Bukhari :: Book 5 :: Volume 59 :: Hadith 587
Narrated Ibn Laila:
None informed us that he saw the Prophet offering the Duha (i.e. forenoon) prayer, except Um Ham who mentioned that the Prophet took a bath in her house on the day of the Conquest (of Mecca) and then offered an eight Rakat prayer. She added, "I never saw the Prophet offering a lighter prayer than that prayer, but he was performing perfect bowing and prostrations."
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