Hurmat-e-Musaaharah

Q: If a person has a stomach issue, when he eats spicy or high calories foods, he gets some white drops coming out from his penis in a normal state without any errection or lust. Now if he shakes hands with an old woman without any lust or erection, will this be hurmat?

Please note that there is no lust or erection for this old lady. The person has a stomach heat problem because of which he gets these drops when he eats spicy food.

Q: Please advise if a man touches or kisses his stepdaughter then what is the ruling in Islam?

Q: If a boy is masturbating and during masturbation he imagines a woman in his mind and he did not touch that woman with lust. So would this man be allowed to marry that woman's daughter?

Q:

1. If a son and father commit sodomy with each other, is it permissible for the son's (who committed sodomy with his father) children/grandchildren to marry his brother's/sister's children/grandchildren?

2. (A) committed sodomy with (B). Will (A)'s sister be allowed to marry (B)'s brother? Or Will (A)'s brother be allowed to marry (B)' sister?

3. (A) committed sodomy with (B). Is it permissible for (A) to marry (B)'s own sister/cousin?

4. If someone committed sodomy with his male cousin/male cousin's son. Are their children/grandchildren allowed to marry each other?

5. If someone touched his female cousin or his female cousin's daughter/male cousin's daughter with lust. Are their children/grandchildren allowed to marry each other?

Q:

1.If someone touched his brother's wife with lust. Will this break his brother's marriage with his wife? Are their children/grandchildren, etc. allowed to marry each others?

2. If someone touched his own sister with lust. Will this break his sisters marriage with her husband? Are their children/grandchildren, etc. allowed to marry each others?

Q: If someone touches his brother's wife with lust, will this nullify his brother's marriage? 

Q: If someone touched his own married or unmarried sister with lust, will this nullify his sister's marriage?

If she is unmarried at that time (when the incident happened), will her marriage be valid in future? What is the ruling if she is married at that time (when the incident happened), will this nullify her marriage?

Q: If a son and father commits sodomy with each other, will this nullify the father's marrige with the son's mother? 

Q: I had read that hurmat-e-musaharah take place only if there was a lawful relationship. I just saw a post that if a man committed zina with a women he cannot marry his daugther. But if he wasn't married to that women and was mislead by shaitan.

Below is what I found.

On the other hand Imam Shaafi (rahmatullahi alaihi) is of the view that hurmat-e-musaharah is established only through lawful intercourse and not through unlawful sexual intercourse or touching.

Q: A person touched his wife's sister's daughter (his wife's niece) with lust when she was 15 years old. His wife now wishes to get her son married to her niece. Will it be permissible for her son to marry her niece? The wife does not have knowledge that her husband touched her niece with lust.