What is the ruling on one of the deceased's brothers — he being among the deceased's wealthy brothers — obtaining a legitimate dependency deed for his sister, so that she may be included among the beneficiaries of the small pension allocated to the heirs, and are they religiously permitted to do so?

If the salary is a grant from the state and not among the entitlements of the deceased, then it belongs to the entity designated by the state according to its conditions. If it allocates it to the wife or children, then it is theirs. If the brother applied to the court to prove his sister's dependency so that she would be included among those entitled to the salary, and this was done through false testimony, then what he did is forbidden. The amount taken from the salary in this manner was taken unjustly and oppressively. It is consuming wealth falsely and an aggression against the wealth of orphans without right, based on the Almighty's saying: "Indeed, those who devour the property of orphans unjustly are only devouring into their bellies fire. And they will enter a blazing fire" and "O you who have believed, do not consume one another's property unlawfully but only [in lawful] business by mutual consent. And do not kill yourselves. Indeed, Allah is to you ever Merciful. (29) And whoever does that in aggression and injustice – We will drive him into a Fire. And that, for Allah, is [always] easy. (30)".