Answered by Ustadh Tabraze Azam
Question: Assalam alaikum,
Does reaching an orgasm by rubbing my private parts against someone else while fasting for Ramadan require an expiation?
Answer: Wa alaikum assalam wa rahmatullahi wa barakatuh,
I pray that this message finds you well, insha’Allah.
You need only to make up this day of fasting (qada’).
This is because you did not do something that is considered a major violation of the fast necessitating an expiation (kaffara), such as actual intercourse. [Shurunbulali, Maraqi al-Falah]
Nonetheless, you still committed a serious sin which requires repentance. [see: A Reader on Tawba (Repentance)]
Please also see: Principles on what invalidates the fast and: Is Expiation Required for Masturbating While Fasting?
And Allah alone knows best.
Checked & Approved by Shaykh Faraz Rabbani