The generosity of Imam Husayn (a.s) is well known. Once Usamah bin Zaid was seriously ill. He went to visit him and when he reached near him, he heard him say, “O! What a great sorrow!” The Imam asked what his problem was. He said that he was in a debt of 60,000 dirhams and now that death was near, the pain of inability of repayment of debt was not less than the pain of death. The Imam said, “Do not worry your debt is my responsibility.”
Usamah said, “What if I die before the debt is repaid?” Imam said, “Rest assured, I will repay your loans before you pass away.” So the Imam returned to his house, called Usamah’s creditors and repaid his loans.
Reference :Akhlaq al-A’imma, Morals & Manners of the Holy Imams