And decree for us in this world [that which is] good and [also] in the Hereafter; indeed, we have turned back to You.” [ Allah ] said, “My punishment – I afflict with it whom I will, but My mercy encompasses all things.” So I will decree it [especially] for those who fear Me and give zakah and those who believe in Our verses
Meaning:-
Afflict: (of a problem or illness) cause pain or suffering to; affect or trouble.
zakah (Arabic): Charity, a tax, comprising percentages of personal income of every kind, levied as almsgiving for the relief of the poor