Takhrij Hadith 607: "There are three things; whoever…"

There are three things; whoever does them will have the teste of faith: that he worships Allah alone and believes that there is no deity worthy of worship except Allah; that he gives the zakah of his wealth willingly and cheerfully every year; and that he does not give as zakah an old animal, one afflicted with disease, a sick animal, or a worthless animal set aside for charity, but rather gives from the average quality of his wealth. For Allah has not asked you for its best, nor has He commanded you to give its worst.