I came riding on my she-ass and had (just) then attained the age of puberty. Messenger of Allah ﷺ 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 Messenger of Allah ﷺ (The sub-narrator added that happened in Mina during the Prophet's Hajjat-al-Wadaʿ.)  

أَقْبَلْتُ وَقَدْ نَاهَزْتُ الْحُلُمَ أَسِيرُ عَلَى أَتَانٍ لِي وَرَسُولُ اللَّهِ ﷺ قَائِمٌ يُصَلِّي بِمِنًى حَتَّى سِرْتُ بَيْنَ يَدَىْ بَعْضِ الصَّفِّ الأَوَّلِ ثُمَّ نَزَلْتُ عَنْهَا فَرَتَعَتْ فَصَفَفْتُ مَعَ النَّاسِ وَرَاءَ رَسُولِ اللَّهِ ﷺ وَقَالَ يُونُسُ عَنِ ابْنِ شِهَابٍ بِمِنًى فِي حَجَّةِ الْوَدَاعِ  

Yahya related to me from Malik from Ibn Shihab from Ubaydullah ibn Abdullah ibn Utba ibn Masud that Abdullah ibn Abbas said, "I approached, riding on a donkey, while the Messenger of Allah ﷺ was leading the people in prayer at Mina, and I was, at that time, nearing puberty. I passed in front of part of the row, dismounted, sent the donkey off to graze, and then joined the row, and no one rebuked me for doing so."  

أَنَّهُ قَالَ أَقْبَلْتُ رَاكِبًا عَلَى أَتَانٍ وَأَنَا يَوْمَئِذٍ قَدْ نَاهَزْتُ الاِحْتِلاَمَ وَرَسُولُ اللَّهِ ﷺ يُصَلِّي لِلنَّاسِ بِمِنًى فَمَرَرْتُ بَيْنَ يَدَىْ بَعْضِ الصَّفِّ فَنَزَلْتُ فَأَرْسَلْتُ الأَتَانَ تَرْتَعُ وَدَخَلْتُ فِي الصَّفِّ فَلَمْ يُنْكِرْ ذَلِكَ عَلَىَّ أَحَدٌ