It is narrated from Sayyiduna Abu Burdah (may Allah be pleased with him) that Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) stated: The Messenger of Allah (peace and blessings be upon him) said: When the Day of Resurrection comes, every believer will be given a Jew or a Christian and it will be said, "This person is your ransom for your salvation from Hell." Sayyiduna Abu Burdah (may Allah be pleased with him) says: Umar bin Abdul Aziz made me swear by the name of Allah whether I had really heard Sayyiduna Abu Musa narrate this hadith from the Messenger of Allah (peace and blessings be upon him), and I said, "Yes." Upon hearing this, Umar bin Abdul Aziz became happy.