سنن ابن ماجه

Jabir bin ‘Abdullah said: “The Messenger of Allah (ﷺ) sat in Mina, on the Day of Sacrifice, for the people (to come and speak to him). A man came to him and said: ‘O Messenger of Allah, I shaved my head before I slaughtered my sacrifice.’ He said: ‘There is no harm in that.’ Then another man came and said: ‘O Messenger of Allah, I slaughtered my sacrifice before I stoned (the Pillar).’ He said: ‘There is no harm in that.’ And he was not asked that day about anything being done before another but he replied: ‘There is no harm in that.’”