Harithah bin Mudarrib (may Allah have mercy on him) said: We went to Sayyiduna Khabbab (may Allah be pleased with him) and he said: "I saw myself with the Messenger of Allah (peace and blessings be upon him) in such a state that I did not own even a single dirham, and today in one corner of my house there are forty thousand dirhams."
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3659