Musannaf Ibn Abi Shaybah 39502 — The great Battle of Badr, how it came

It is narrated from Muhammad bin Amr bin Ata that Suhayl bin Amr was a man whose lower lip was split. When he was brought as a captive on the day of Badr, Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) said: "O Messenger of Allah (peace and blessings be upon him), let me pull out his two lower front teeth so that his tongue will hang out and he will not be able to speak against you in any place." He (peace and blessings be upon him) said: "I do not mutilate, lest (in retribution) Allah Almighty should mutilate me."