Narrated Ibn 'Abbas:

A man said to the Prophet (while he was delivering a sermon on the Day of Nahr), "I have performed the Tawaf round the Ka'ba before the Rami (throwing pebbles) at the Jamra." The Prophet ﷺ said, "There is no harm (therein)." Another man said, "I had my head shaved before slaughtering (the sacrifice)." The Prophet ﷺ said, "There is no harm." A third said, "I have slaughtered (the sacrifice) before the Rami (throwing pebbles) at the Jamra." The Prophet ﷺ said, "There is no harm."

حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا أَبُو بَكْرٍ، عَنْ عَبْدِ الْعَزِيزِ بْنِ رُفَيْعٍ، عَنْ عَطَاءٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ قَالَ رَجُلٌ لِلنَّبِيِّ ﷺ زُرْتُ قَبْلَ أَنْ أَرْمِيَ. قَالَ " لاَ حَرَجَ ". قَالَ آخَرُ حَلَقْتُ قَبْلَ أَنْ أَذْبَحَ. قَالَ " لاَ حَرَجَ ". قَالَ آخَرُ ذَبَحْتُ قَبْلَ أَنْ أَرْمِيَ. قَالَ " لاَ حَرَجَ ".