慷慨解囊

to donate generously (idiom)

lit. to loosen one's purse; fig. to give generously to help others

to empty out one's pocket; (fig.) to give everything one has (to help)

distributing money, fighting for virtue (idiom); fig. generous in helping the needy

distributing money, supporting virtue (idiom); fig. to give generously in a public cause

to be generous in the extreme (idiom)