Literal meaning of Zakaat
The literal meaning of Zakaat is purity (Taharah) and to increase. These are amply found in the wealth from which Zakaat is given. The wealth from which Zakaat is given is pure and it does increase through it. As given in Al Bahr Ur Raiq Sharh Kanz Ud Daqaaiq, Vol. 2, Pg. No. 352.