بكير بن أعين

"The maternal siblings are entitled to one-third of the inheritance along with the grandfather, and the grandfather shares the inheritance with the paternal siblings."

“A man once asked abu Ja‘far (a.s.), about two sisters and a husband. He (the Imam) said, ‘It is half and half.’ The man then said, ‘I pray to Allah to keep you well, Allah has mentioned their share to be more than that. Their share is two-thirds.’ He then asked, ‘What do you say about a brother and husband?’ He (the Imam) said, ‘It is half and half.’ He asked, ‘Has Allah not given the entire legacy, saying, “. . . and he inherits her if she has no children.”?”’

I asked Abu Abdullah (as) about a woman who died and left behind her husband, maternal brothers, and paternal brothers. Imam (as) said: "The husband receives half of the inheritance, which is three shares. The maternal brothers receive one-third, with males and females sharing equally. The remaining share goes to the paternal brothers and sisters, where the share of a male is equal to that of two females."

"The grandfather, when inheriting alongside the paternal siblings, is considered as one of the brothers."

“I once asked abu ‘Abd Allah (a.s.), about the case of a woman who has left behind her husband, brothers from her mother and brothers and sisters from her father. He (the Imam) said, ‘The share of husband is one-half, three shares, the share of brothers from her mother is one-third, male and female receive equal shares. The one remaining share belongs to brothers and sisters from the father. Each male receives twice as much as a female; ordained shares do not face deficiency. The share of husband does not reduce from one-half and the share of brothers from her mother, which is one-third, does not reduce. Allah, most Majestic, most Glorious, has said, ‘. . . if they are more than this they share the one-third, if there is one he receives one-sixth.’ (4:12) What Allah, most Blessed, most High, has meant by His words, ‘. . . if it is a man inherited by Kalalah (burdensome people) or a woman and has a brother or sister then everyone gets one-sixth and if they are more than this they share the one- third.’ By this Allah has meant brothers and sisters from mother only. Allah in the end of chapter four has said, ‘. . . they ask for a fatwa from you about Kalalah. If a man dies and has no children but has a sister [meaning sister from both parents and sister from the father] she receives one-half of the legacy and he inherits her, if she does not leave children. If they are brothers and sisters, the share of the male is twice as much as the share of female.’ They are the ones whose shares increase and decrease. So also are their children whose shares increase and decrease. If a woman dies and leaves behind her husband and brothers from her mother and two sisters from her father, the share of husband is one- half, three shares, brothers from the mother receive two shares and one remaining share is for the two sisters from her father. If she is one, it is for her like two sisters from her father; if they were brothers from the father, no increase would take place in the remaining. If she was one or in the place of one female, there was a brother no increase would take place in the remaining. There is no increase for sisters or for a child if he was a male.’”