The present thesis discusses, among other things, the elements of succession according to Islamic Law. The heirs are properly classified into classes, such as the descendents, ascendents, colletorals, remote ascendents and the distant Kindreds. The heirs are further categorised into Quranic and residualries. the residuaries are yet classified into residuary in his own right, accompanying residuaries and residuaries with another. The conditions that the heir must survive the deceased in fact (de facto) or in law (de jure) have also been fully discussed in this thesis. Discussion is also focussed on the estate, its defination, the conditions of legality and what right are to be taken therefrom before the final distribution of the estate of the heirs. Likewise Paternity, marriage and patronage have been out lined. The concept of paternity in englis and Pre- Islnmic Arab Laws hove been discused brefly and distinctions have been made between the concept of paternity of Islam and other systems. For the purpose of succession, marriage has been classi fied into three, that is valid, Fasid and Batil marriage. The first type gives the right of succession to a spouse - relict, the second type of marriage lives the right of succession to the spose - relict there is conssumation; the Batil marriage is void ab initio,and does not confer any rights and obligations between the parties. Even though slavery in the true Islamic sense is almost. extinct in the comtemporary world, a brief discus been mode on it.