English Translation
Narrated 'Abdullah bin 'Abbas: I came riding on my she-ass and had (just) then attained the age of puberty. Allah's Apostle was praying at Mina. I passed in front of a part of the first row and then dismounted from it, and the animal started grazing. I aligned with the people behind Allah's Apostle (The sub-narrator added that happened in Mina during the Prophet's Hajjat-ul-wada.)
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.