The ruling on refusing an invitation to a wedding feast if attending it would cause the loss of the Fajr prayer?

Question:
He says: Honorable Shaykh, may Allah grant you success. I am invited to wedding feasts and I refuse to attend them, because my soul dislikes gatherings, especially since most of these feasts do not have the Isha prayer until after midnight, which causes me to miss some of the obligatory duties, such as the Fajr prayer. So, am I sinful for not responding?

Answer:
You are not sinful if attending would result in harm to you. You are not sinful if you delay, yes. There is no harm and no reciprocating harm, yes.