Answer
It is definitely an extremely major sin for the married man, rather for any man to approach another woman for such lewdness.
In order to be redeemed from this sin, the individual has to sincerely repent to Allah by firstly abstaining from the sin, regret having committed it and solemnly resolve not to return to that sin in the future. By doing this, Insha Allah he will be pardoned by Allah.
and Allah Ta’ala Knows Best
Mufti Muhammad Ashraf
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