从男女的社会交往（Ijtima）中产生的各种关系，关系到他们的利益以及男女两性所生活的社会的利益。这些关系与人们为买卖、租赁、委托代理等事务聚在一起时所引发的社会问题不同。有人可能会认为，这些关系仅仅指婚姻。事实上，婚姻只是其中的一种关系，这些关系还包括婚姻以外的其他关系。因此，性结合并不是繁衍本能的唯一表现形式，而只是其中的一种，因为还有其他表现形式。由此可见，母性、父性、兄弟关系、子女关系以及舅舅或姨父等（母系或父系的）叔伯关系，都是繁衍本能的表现形式。因此，男女相遇所产生的关系，既包括婚姻，也包括母子关系和父子关系。社会制度涵盖了这些关系，正如涵盖了婚姻一样。伊斯兰教法（Shar'a）既为婚姻制定了规则，也为子女关系、父子关系和母子关系制定了规则。

From the social gathering (Ijtima) of men and women arise relationships which pertain to their interests and the interests of the community in the midst of which both sexes live. They are different to the problems in society that arise when people come together for the purpose of selling, renting, delegating and other such matters. It may occur to some that these relationships constitute only marriage. The truth is that marriage is only one of the relationships, and they include other than marriage. Therefore, the sexual association is not the only manifestation of the procreation instinct, but rather it is one of its manifestations since there are others. Thus, motherhood, fatherhood, brotherhood, sonship and unclehood (maternal and paternal) are all manifestations of the procreation instinct. Consequently, the relationships, which result from the meeting of men and women, include motherhood and fatherhood, just as marriage. The social system includes them, just as it includes marriage. The Shar’a came with rules for sonship, fatherhood and motherhood, just as it came with rules for marriage.