Shafi'i Fiqh

Consequences of Miscalculating Zakah

I have miscalculated the Zakah on my wealth where I thought it was (5%) while it was (2.5%). I realized this mistake after I had distributed the Zakah. What is the ruling of Sharia on this? Is it permissible to consider the excess amount as advanced Zakah for the coming year?

Shafi'i Fiqh

Charity Given to Rich Beggar doesn`t Become Part of his Property

We found out that our father was a beggar and this was the source of his estate. However, sometimes, the money that he collected from begging sufficed for our needs and there was even a surplus. Is it lawful for us to take our shares in the inheritance or not? If it is unlawful, is it permissible to use that inheritance as a loan and pay it back to charity on his behalf?