Sayyiduna Mudrik bin Awf al-Ahmasi (may Allah be pleased with him) was sitting with Sayyiduna Umar (may Allah be pleased with him). The people mentioned a man who had sold his life on the day of the battle of Nahawand. Mudrik (may Allah be pleased with him) said: O Commander of the Believers! He was my maternal uncle. People think that he threw himself into destruction. Sayyiduna Umar (may Allah be pleased with him) said: The people are wrong; rather, he has purchased the Hereafter in exchange for his own self.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17928