Sheikh Kaasim Muhyideen, who died in the year of 1376 A.H., was one of the noble scholars of the city of Najaf. This scholar used to go to the rich merchants and businessmen in Najaf to pledge money for the poor and needy. Although they used to refuse him in the morning, he used to go to them in the afternoon and once again ask them again. In this way he used to collect a lot of money to distribute to the needy.
It is known that he didn’t use this wealth personally and used to have a simple diet of bread and milk due to his own poverty. It is also known that when he became ill, and doctors advised him to go abroad for medical treatment, he had to sell his library in order to get money for the treatment. (Mausooatul Atabaat Al Muqadassa Page 314-317)
Taken from: Islamic - laws
source : sibtayn