فَقُلْ هَل لَّكَ إِلَى أَن تَزَكَّى
(And say to him: â€Would you purify yourself'') (79:18) What is meant by Zakah here is purification of the soul, ridding oneself of all bad qualities, the worst of which is Shirk. The Zakah paid on one's wealth is so called because it purifies wealth, and it is a means of increasing it, blessing it and making it more beneficial, and a means of assisting one to use it in doing good deeds. Qatadah said, â€They withheld the Zakah of their wealth.'' This is the apparent meaning according to many of the scholars of Tafsir, and this is the view favored by Ibn Jarir. But the matter is subject to further examination, because the obligation of Zakah was instituted during the second year after the Hijrah to Al-Madinah, according to what is stated by several scholars. Yet this Ayah was revealed in Makkah. However, it is not unlikely that the principle of giving charity and Zakah was already in place and had been enjoined at the beginning of the Prophet's mission, as Allah says: