My father owns an agricultural land and he has given my brother a part of it in return for cultivating the land. Is this permissible,
even if the heirs disapprove of it?
This is permissible if your father is the sole owner of the land and he gives your brother a part of it in return for cultivating the whole land, without any favors involved in the agreement. In case of any dispute, the matter is to be referred to court. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.