Alhamdulillah, last year I have performed hajj during hajj when I was in Muzdalifah our bus reached there late night but our instructor didn’t allow us to let down from bus because he was searching an appropriate place but we were getting late to perform namaz so some of us got down from bus and perform namaz there but suddenly I realized that I have got sleep in bus and still I was feeling snooze, I was in doubt that my wudhu is broken or not and the person who was our imam have not covered his body parts above waist so I made Fresh wudhu and joined another jamat for namaz but when they finished namaz I realized it was Isha namaz my Maghrib namaz was left so then I preformed Maghrib namaz alone. Will I have to pay ritual penalty(Dum) for above mentioned mistake?
بسم الله الرحمن الرحيم
In the above mentioned case, no dam is wajib on you.
Allah knows Best!
Darul Uloom Deoband