It was narrated from Ibn ‘Abbas that the Prophet ﷺ marked the sacrificial animal on the right side of the hump and wiped away the blood.
أَنَّ النَّبِيَّ ﷺ أَشْعَرَ الْهَدْىَ فِي السَّنَامِ الأَيْمَنِ وَأَمَاطَ عَنْهُ الدَّمَ وَقَالَ عَلِيٌّ فِي حَدِيثِهِ بِذِي الْحُلَيْفَةِ وَقَلَّدَ نَعْلَيْنِ