Incest, in whatever form, is a very grave and detrimental sin in the viewpoint of the Shari’ah. Not only does this heinous act result in great punishment in the hereafter, but in the very world it sets off a frightening chain reaction. Consider the following Sharee ruling:
Should a man commit adultery or even touch a blood relative with lust and desire then automatically the Usool – ascendants (parents, etc.) and Furoo’ – descendants (children, etc.) of both parties become Haraam (forbidden in marriage) upon each other. (Shaami Vol. 2 pp. 32-36).
Example 1: If a man touches his daughter-in-law with lust and desire then his son and daughter-in-law (son’s wife) become Haraam upon one another. They can no longer stay together with one another as husband and wife.
Example 2: If the father touches his daughter with lust and desire then he and his wife (his daughter’s mother) become Haraam upon one another.
THE MUSLIM PUBLIC IS HEREBY NOTIFIED THAT THE JAMIAT IS FREQUENTLY FACED WITH THE ABOVE SITUATIONS AND THE CONSEQUENCES LEAD TO MARRIAGE BREAK-DOWN AND UNTOLD HEARTACHE.
In order to avoid the ghastly consequences of the above types of situations, it is advisable that men and women strictly adhere to maintaining the Laws of Purdah and separation of sexes, which have been prescribed for the peace and harmony of mankind.