Silsilat al-Ahadith al-Sahihah

It is narrated from Ibn Abbas (may Allah be pleased with them both) that he said: A man came to Sayyiduna Umar (may Allah be pleased with him) and was asking (for something). You would sometimes look at his head and sometimes at his feet, so that some sign of poverty and destitution might be seen in him. Then Sayyiduna Umar (may Allah be pleased with him) said to him, "How much wealth do you have?" He said: "Forty camels." Ibn Abbas (may Allah be pleased with them both) said: Allah and His Messenger (peace and blessings of Allah be upon him) have spoken the truth, that if the son of Adam had two valleys of gold, he would surely seek a third valley. Nothing will fill the belly of the son of Adam except dust, and Allah turns with mercy to him who repents to Him. Sayyiduna Umar (may Allah be pleased with him) said: "What is this?" (i.e., he was surprised about the hadith). Ibn Abbas (may Allah be pleased with them both) says that I said: My father (may Allah be pleased with him) taught me in this way. Sayyiduna Umar (may Allah be pleased with him) said: "Take us to him." He says that Umar (may Allah be pleased with him) came to Ubayy (may Allah be pleased with him) and said: "What does he say?" Sayyiduna Ubayy (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings of Allah be upon him) also told me in this way.