4. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Mahbub from ibn Ri’ab from abu ‘Ubaydah who has narrated the following: “About the case of a man who dies and leaves behind his wife, sister and grandfather, abu Ja‘far عليه السلام, has said, ‘This is distributed from four parts, one-fourth for the woman, one share for the sister and two shares for the grandfather.’”