The Sunnah on the day of sacrifice is to stone the Jamrah, then offer the sacrifice, then shave the head, and shaving should be started on the right side of the head
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَابْنُ، نُمَيْرٍ وَأَبُو كُرَيْبٍ قَالُوا أَخْبَرَنَا حَفْصُ بْنُ، غِيَاثٍ عَنْ هِشَامٍ، بِهَذَا الإِسْنَادِ أَمَّا أَبُو بَكْرٍ فَقَالَ فِي رِوَايَتِهِ لِلْحَلاَّقِ " هَا " . وَأَشَارَ بِيَدِهِ إِلَى الْجَانِبِ الأَيْمَنِ هَكَذَا فَقَسَمَ شَعَرَهُ بَيْنَ مَنْ يَلِيهِ - قَالَ - ثُمَّ أَشَارَ إِلَى الْحَلاَّقِ وَإِلَى الْجَانِبِ الأَيْسَرِ فَحَلَقَهُ فَأَعْطَاهُ أُمَّ سُلَيْمٍ . وَأَمَّا فِي رِوَايَةِ أَبِي كُرَيْبٍ قَالَ فَبَدَأَ بِالشِّقِّ الأَيْمَنِ فَوَزَّعَهُ الشَّعَرَةَ وَالشَّعَرَتَيْنِ بَيْنَ النَّاسِ ثُمَّ قَالَ بِالأَيْسَرِ فَصَنَعَ بِهِ مِثْلَ ذَلِكَ ثُمَّ قَالَ " هَا هُنَا أَبُو طَلْحَةَ " . فَدَفَعَهُ إِلَى أَبِي طَلْحَةَ .
Abu Bakr reported: (He called for) the barber and, pointing towards the right side of his head, said: (Start from) here, and then distributed his hair among those who were near him. He then pointed to the barber (to shave) the left side and he shaved it, and he gave (these hair) to Umm Sulaim (Allah be pleased with her). And in the narration of Abu Kuraib (the words are):" He started from the right half (of his head), and he distributed a hair or two among the people. and then (asked the barber) to shave the left side and he did similarly, and he (the Holy Prophet) said: Here is Abu Talha and he gave these (hair) to Abu Talha."