Does looking with lust at the private parts of the husband's father, which are covered by clothing, make marriage forbidden by affinity?

The majority of scholars do not establish the prohibition of marriage by affinity (Musahara) merely by looking at the private parts with lust, unlike the Hanafis who believe that looking at the private parts with lust (at the inside, not the outside) necessitates the prohibition of affinity, preventing the initiation and continuation of marriage. This prohibition extends to the ascendants and descendants of both spouses. The same applies to a woman touching or looking at a man's private parts with lust, just as it applies to a man's touching and looking.

Based on this, a wife looking at her husband's father's private parts with lust does not render her prohibited to her husband by affinity, due to the absence of the conditions for prohibition according to those who uphold it.