Salam alaikum , 7 brothers and 3 sisters from single father and mother. 2 sons died when the father was living and after few years both parents died. Now the remaining 5 brothers and three sisters who are alive are saying that in shariyate jafari if the son dies while father is alive his children’s do not inherit a single pie from their grandfathers property. Is that true in regards to yateem kids that they are told they don’t inherit anything from their grand father because their father died?

Wa aliakum salaam. Only 5 brother and three sister only will get money from parents