Abdullah bin Abi Qatadah narrates from his father (Sayyiduna Abu Qatadah, may Allah be pleased with him) that he used to demand repayment of a debt from a man. Then it happened that the man hid himself. When he met him again, he said to him: Why did you do that? He said: Because of hardship. So he made him swear to it, and he swore. He sent for his deed of acknowledgement and gave it to him, and said: I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever is lenient with someone in hardship, or forgives him the debt, Allah Almighty will save him from the distresses of the Day of Resurrection."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب التفليس / 11289