[Machine] Sahl ibn Saad had seen and heard from the Prophet ﷺ when he was fifteen years old on the day the Messenger of Allah ﷺ passed away.
سَهْلُ بْنُ سَعْدٍ «وَكَانَ قَدْ رَأَى النَّبِيَّ ﷺ وَسَمِعَ مِنْهُ وَأَنَّهُ ابْنُ خَمْسَ عَشْرَةَ سَنَةً يَوْمَ تُوُفِّيَ رَسُولُ اللهِ ﷺ»