Musar zu Mischlej 14:34

Now, hearken to the importance of generosity and of the men who give freely to the poor, as it is written, "Righteousness will exalt a people" (Prov. 14:34). Come and see, how great is the power of charity, for it is described as being at the right hand of the Holy One, Blessed be He, as it is said, "Thy right hand is full of righteousness" (Ps. 48:11) (Midrash to Prov. 14).