Question : If two sons are inheriting from their deceased father a house, if one son did not agree to give a share of the house his brother, will the prayers in this house be like prayers on usurped territory (ghasb)?
Answer : If the son prevents his siblings from using the house that they all share, then he is considered as a usurper. The same applies if they asked him in this case for rent and he refused to pay it to them.