Dhihar
Question :

If one jokingly calls his wife 'mother', will this be considered as dhihar?

Answer :

Such ways of calling the wife as mother does not have any religious consequences.

Dhihar
Question :

What is the verdict concerning a man that told his fiancée (i.e. a woman who he is courting) that, "If I marry you, it is tantamount to marrying my mother". In this regard, is the woman lawful for the man to marry? Or what is the penalty?

Answer :

This does not affect the permissibility to marry her, but we encourage the avoidance of such things.