Is it permissible for two deceased brothers, who are rumored to be adopted and not blood brothers, with no evidence other than a few rumors, to inherit from their deceased brother who is officially registered as their brother?

It is not permissible to question the lineage of someone whose lineage has been established, nor to deprive them of inheritance. The lineage of the aforementioned child is established by two matters:

1. The deceased's father registering him under his name in official documents, which is an acknowledgment that establishes lineage. 2. The widespread hearsay among most people that he is his son, as widespread hearsay (tasaamu') establishes lineage according to jurists, provided that the hearing comes from a large group whose collusion in lying is improbable.

Accordingly, the two aforementioned children inherit from the deceased as they are his brothers, and whoever claims otherwise must provide proof.