Some Years ago whilst formulating a gift agreement of a house from a father (in his sound and healthy state) to his 3 daughters to be shared equally,

Question

Some Years ago whilst formulating a gift agreement of a house from a father (in his sound and healthy state) to his 3 daughters to be shared equally, I did not stipulate that he should ear mark or demarcate the portion of the home which each of his daughters would own. The fuqaha state that Hibat ul Musha is not Saheeh so where does that place the agreement we wrote and signed and was understood by each one then? Does it stand and how can we correct it if it is problematic? The father and all his daughters are still alive.