7. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan from Safwan from ibn Muskan from al-Halabiy who has narrated the following
“I once asked abu ‘Abd Allah (a.s.), about the case of brothers from one’s mother with a grandfather. He (the Imam) said, ‘The ordained share of brothers from one’s mother is one-third if a grandfather is with them.’”