I saw the Messenger of Allah ﷺ throwing pebbles on the day of sacrifice while on his riding beast and saying: Learn your rites, for I do not know whether I am likely to perform Hajj after this occasion.
سَمِعْتُ جَابِرَ بْنَ عَبْدِ اللَّهِ يَقُولُ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَرْمِي عَلَى رَاحِلَتِهِ يَوْمَ النَّحْرِ يَقُولُ لِتَأْخُذُوا مَنَاسِكَكُمْ فَإِنِّي لاَ أَدْرِي لَعَلِّي لاَ أَحُجُّ بَعْدَ حَجَّتِي هَذِهِ