Sunan Ibn Majah 3097
سنن ابن ماجه#3097SahihIt 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 25:216