I saw the Messenger of Allah ﷺ throwing pebbles on the day of sacrifice while on his riding beast in the forenoon, and next when the sun had passed the meridian. (Using translation from Abū Dāʾūd 1971)
سَمِعْتُ جَابِرَ بْنَ عَبْدِ اللهِ يَقُولُ رَأَيْتُ رَسُولَ اللهِ ﷺ يَرْمِي يَوْمَ النَّحْرِ ضُحًى وَحْدَهُ وَأَمَّا بَعْدَ ذَلِكَ فَبَعْدَ زَوَالِ الشَّمْسِ
I saw the Messenger of Allah ﷺ throwing pebbles on the day of sacrifice while on his riding beast in the forenoon, and next when the sun had passed the meridian.
أَنَّهُ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ يَقُولُ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَرْمِي عَلَى رَاحِلَتِهِ يَوْمَ النَّحْرِ ضُحًى فَأَمَّا بَعْدَ ذَلِكَ فَبَعْدَ زَوَالِ الشَّمْسِ
"The Prophet would stone on the Day of An-Nahr during the morning light, as for (the days) afterwards, then (he would do it) after the Zenith of the sun."
كَانَ النَّبِيُّ ﷺ يَرْمِي يَوْمَ النَّحْرِ ضُحًى وَأَمَّا بَعْدَ ذَلِكَ فَبَعْدَ زَوَالِ الشَّمْسِ