is not obligatory.

is not obligatory. Here two criteria exist. First the look of a father and even an uncle differs from that of a non-mahram. It is natural that a father does not look at his daughter with lust or with the fear of deviating nor a son at his mother. Among brothers and uncles the same is true. But there are some relationships which cannot be said to be this way. For instance, the son of a husband. Can the son of a husband naturally have the same feelings that a father has for his daughter?

Even if his daughter is among the most beautiful women of the world? If a man takes a young wife who is of the same age as his son, will it be this…