Sunnan Abu Dawud Collection: ::Book Number 19:: Hadith # 3031
Narrated Anas ibn Malik ; Uthman ibn AbuSulayman: The Prophet (peace_be_upon_him) sent Khalid ibn al-Walid to Ukaydir of Dumah. He was seized and they brought him to him (i.e. the Prophet). He spared his life and made peace with him on condition that he should pay jizyah (poll-tax).