Fighting in Jihad - Section 2 Mishkat al-Masabih 3953
Arabic hadith text
وَعَن عُروَةَ قَالَ: حدَّثني أسامةُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ عَهِدَ إِلَيْهِ قَالَ: «أَغِرْ عَلَى أُبْنَى صباحا وَحرق» . رَوَاهُ أَبُو دَاوُد
Translation
‘Urwa said Usama told him that God's Messenger enjoined him to attack Ubna in the morning and burn the place. Abu Dawud transmitted it.