Nafi' narrates from Abdullah bin Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) cut down the date palms of Banu al-Nadir and burned them. About this, Hassan bin Thabit (may Allah be pleased with him) said: For the chiefs of Banu Lu'ayy, burning the spreading palm trees at a place called al-Buwayrah is an easy thing. And about this the verse was revealed: "Whatever palm trees you cut down or left standing on their trunks." [Surah al-Hashr: 5]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18112