´Abdullah bin Amr narrated:` "A man asked the Messenger of Allah: 'I shaved before slaughtering.' So he said: 'Slaughter, and there is no harm.' Another man asked him: 'I performed the sacrifice before stoning.' He said: 'Stone, and there is no harm.'"
Hadith Referenceسنن ترمذي / كتاب الحج عن رسول الله صلى الله عليه وسلم / 916