In traditional Islam, the Qur'an and Sunnah are both essential and authoritative, and Mohammed is considered the perfect man whose life is to be imitated.
The "...sayings and deeds of Prophet Muhammad...[are] known as the sunnah....The reports of the Prophet's sayings and deeds are called ahadith.
One source of ahadith is Sahih Bukhari. Bukhari "lived a couple of centuries after the Prophet's death and worked extremely hard to collect his ahadith. Each report in his collection was checked for compatibility with the Qur'an, and the veracity of the chain of reporters had to be painstakingly established. Bukhari's collection is recognized by the overwhelming majority of the Muslim world to be one of the most authentic collections of the Sunnah of the Prophet."
With that in mind, here is a gem from that paragon of virtue, the founder of the Religion of Peace, courtesy of the USC Trojans:
Volume 8, Book 82, Number 796:And Jesus commanded, "Love your enemies."
Narrated Anas:
A group of people from 'Ukl (tribe) came to the Prophet and they were living with the people of As-Suffa, but they became ill as the climate of Medina did not suit them, so they said, 'O Allah's Apostle! Provide us with milk.' The Prophet said, I see no other way for you than to use the camels of Allah's Apostle.' So they went and drank the milk and urine of the camels, (as medicine) and became healthy and fat. Then they killed the shepherd and took the camels away. When a help-seeker came to Allah's Apostle, he sent some men in their pursuit, and they were captured and brought before mid day. The Prophet ordered for some iron pieces to be made red hot, and their eyes were branded with them and their hands and feet were cut off and were not cauterized. Then they were put at a place called Al-Harra, and when they asked for water to drink they were not given till they died. (Abu Qilaba said, 'Those people committed theft and murder and fought against Allah and His Apostle.')