Explanation:

Absolute Prohibition

A Muslim marriage cannot take place if the parties are within the within blood relationship or prohibited degree of relationship of each other and the Marriage turns to be void. The absolute prohibited degrees of relationship are as follows:

• Consanguinity

It refers to blood relationship in which a man is barred from marrying the following females. They are as follows:

1. His mother or Grand-mother (how high so ever),
2. His daughter or Grand-daughter (how low so ever),
3. His sister (irrespective of full blood/ half blood/ uterine blood),
4. His niece or Great-niece (how low so ever), and
5. His aunt or great aunt, whether paternal or maternal (how high so ever).

A marriage with woman prohibited under consanguinity is void. Also, children born out of that wedlock are considered as illegitimate.