The Book of Hajj
24/63. Chapter:
On Which Side Should It Be Marked?
Sunan an-Nasai
أَخْبَرَنَا مُجَاهِدُ بْنُ مُوسَى، عَنْ هُشَيْمٍ، عَنْ شُعْبَةَ، عَنْ قَتَادَةَ، عَنْ أَبِي حَسَّانَ الأَعْرَجِ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم أَشْعَرَ بُدْنَهُ مِنَ الْجَانِبِ الأَيْمَنِ وَسَلَتَ الدَّمَ عَنْهَا وَأَشْعَرَهَا .
It was narrated from Ibn Abbas: That the Prophet marked his Budn on the right side and the blood flowed down and marked it.
Reference : Sunan an-Nasa'i 2773In-book reference : Book 24, Hadith 155English translation : Vol. 3, Book 24, Hadith 2775