Is a blood sacrifice obligatory for one who was unable to spend the night in Muzdalifah and pray therein due to the bus's delayed arrival until 7:00 AM?

Staying overnight in Muzdalifah is obligatory according to the majority of scholars. Merely passing through it in the second half of the night, after standing at Arafat, is sufficient. If a pilgrim is unable to enter Muzdalifah due to overcrowding, there is no penalty, as obligations are waived for a valid excuse. Delaying prayer beyond its prescribed time is forbidden and a grave sin. Therefore, if a pilgrim fears that the time for 'Isha prayer will expire before reaching Muzdalifah, he must pray on the way according to his circumstances. Whoever delays prayer must repent to Allah.