What is the share of the paternal grandfather when there are more than four full sisters?
Chapter on Inheritance of the Grandfather
Al-Mughni
Book of Inheritance Shares (Farā'id)
Primary text
If there are more than four full sisters, the paternal grandfather receives either the one-sixth share (السدس) or one-third of the remainder (ثلث الباقي), and the rest goes to the sisters.