The Nisab of Gold and Silver and the Amount of the Prophetic Sa'

Question:
May Allah reward you with good. He has another section in which he asks about the nisab (minimum threshold for zakah) of gold and silver, and what that amount is in the Prophet's sa' (a dry measure of about 3 kg) in kilograms?

Answer:
The amount of gold, its nisab, is twenty mithqals, twenty mithqals. And silver is one hundred and forty mithqals of silver. This amount is the basis for the nisab of gold and silver: twenty mithqals for gold and one hundred and forty mithqals for silver. The amount of the Prophet's (peace and blessings be upon him) sa' is four full handfuls from the palms of a person of average build. Each handful is called a mudd (a quarter of a sa'), so the sa' is four mudds, meaning four handfuls. Its amount in kilograms now, its amount in kilograms now, is approximately three kilograms, approximately three kilograms. Yes.