Is the Hajj valid if one experiences a wet dream on the Day of Arafah and does not perform ghusl until after throwing the pebbles and shaving on the following day?

Wet dreams do not affect the validity of Hajj, according to the consensus of jurists. Inability to perform ghusl (ritual bath) is not an excuse for delaying prayer, as tayammum (dry ablution) is permissible when one is unable to perform ghusl.