Making will under islamic law

Dear Querist, 

Islamic Law in this regard is quite peculiar, It states that a Muslim cannot give away property more than 1/3rd by will. Rest of the property devolves by ordinary succession among legal heirs (which includes Mr.A's wife - B). In case of more than 1/3rd being given by will consent of heirs is required after the death of person. Since he is giving the property equally to Daughter and Son's Son. It can operate only if all other legal heirs (can't say who all as I don't know the family pedegree) consent to this bequest.  In case they all consent - the daughter takes property in her own right, as regard predeaceased son's minor son - for him the property would be recieved by natural guardian, after father (in absence of father's will) father's father is the natural guardian under Islam (and not mother). Here it is advisable he also appoints a guardian to the child by his will (he has the power) he can appoint anybody to hold the property in trust for child after his death. 

He can also contemplate gifting the property in his lifetime, by complying with the requirements of Muslim Hiba. 

Hope this answer is satisfactory to you !

The family consists of:

Mr. A and Mrs. B (wife of Mr. A)

Mrs D (daughter-in-law) and Master E (both don't live with Mr. A - but stay with D's parents)

Mrs E (daughter) and her husband + three children.

Please throw some more light on the legal possibilities of giving the property to daughter and grandson.