Is it permissible to throw the pebbles all at once due to severe crowding?

Question:
The questioner will ask: What is the expiation required of the one who threw the pebbles once, that is, all at once, contrary to the recommended practice of throwing them in sequence, on the pretext of the severe crowding in the area of the jamarat?

Answer:
If he threw them in one throw, he owes a sacrificial animal to be slaughtered in Makkah for the poor if he does not repeat it. However, if he returns during the day or at night, that suffices. But if he passes through the days of Mina without repeating it, he owes a sacrificial animal that is acceptable as an 'Id sacrifice, to be slaughtered in Mina or in Makkah for the poor.