Sahih Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Volume: 005 / Book Number: 059 / Hadith Number: 675
Narrated Abu Huraira:
Tufail bin 'Amr came to the Prophet and said, "The Daus (nation) have perished as they disobeyed and refused to accept Islam. So invoke Allah against them." But the Prophet said, "O Allah! Give guidance to the Daus (tribe) and bring them (to Islam)!"