Because Allah Almighty has denied the attainment of virtue for the person who does not give charity from his favorite wealth. Allah Almighty says: « لَن تَنَالُوا الْبِرَّ حَتَّىٰ تُنفِقُوا مِمَّا تُحِبُّونَ ۚ وَمَا تُنفِقُوا مِن شَيْءٍ فَإِنَّ