Ahmad 50 years old got married to Zeenat at the age of 45 but could not raise any issue.Ahmad is putting up in his wifes house (given as her share to her) separately and the couple is from pulling on.Ahmad has been verbally adopted by his in laws but no property has been written in his name by his inlaws.Zeenat,(Ahmads wife) wife has one more married sister and two married brothers who are all living separate from their parents and Zeenats family has huge property of her parents.What share is due to Ahmed before the death of his wife Zeenat or afterwards ?Please give elaoborative answer as per Sharia.