Majma al-Zawaid — Hadith 16042

Ya'qub bin Abd al-Rahman al-Qari narrates: My father told me that Sayyiduna Hakim bin Hizam (may Allah be pleased with him) lived for one hundred and twenty years; he spent sixty years in Islam and sixty years of his life in the Jahiliyyah. Whenever he wanted to make an oath emphatic, he would say: No! By the One who blessed Hakim by not letting him be killed on the day of Badr, I will not do such and such; and he would not do it. His kunyah was "Abu Khalid".
Imam al-Tabarani recorded it, and its narrators up to the one who made the statement are thiqat (trustworthy).