Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)

Bukhari :: Book 5 :: Volume 59 :: Hadith 365

Narrated Ibn Umar:

Allah's Apostle had the date-palm trees of Bani Al-Nadir burnt and cut down at a place called Al-Buwaira. Allah then revealed: "What you cut down of the date-palm trees (of the enemy) Or you left them standing on their stems. It was by Allah's Permission." (59.5)