My father has diabetics, has not been fasting for many years. what should he do to make up for that?

He should endeavour to keep Qadhaa, failing which, grain equivalent to the amount stipulated for Sadaqatul Fitr (R7,00) in place of every fast that he missed should be given to a poor person. Alternatively, he could feed one poor person with two complete meals for each fast that he missed.

In the Shari'ah, this is known as Fidyah. It is also permissible for him to given the value of the grain in cash.

and Allah Ta'ala Knows Best

Mufti Ebrahim Desai