It was narrated from Abu Baddah bin ‘Asim, from his father, that the Prophet ﷺ granted permission for some shepherds to stone one day and to not stone (the next) day. (Using translation from Ibn Mājah 3036)  

أَنَّ النَّبِيَّ ﷺ «رَخَّصَ لِلرِّعَاءِ أَنْ يَرْمُوا يَوْمًا وَيَدَعُوا يَوْمًا»  

the Messenger of Allah granted a concession to some camel herders, allowing them to not stay overnight in Mina, and allowing them to stone the Jimar on the Day of Sacrifice, then to combine the stoning of two days after sacrifice, so that they could do it on one of the two days. (Using translation from Nasāʾī 3069)  

أَنَّ رَسُولَ اللهِ ﷺ «رَخَّصَ لِلرِّعَاءِ في الْبَيْتُوتَةِ يَرْمُونَ يَوْمَ النَّحْرِ وَالْيَوْمَيْنِ اللَّذَيْنِ بَعْدَهُ يَجْمَعُونَهُمَا فِي أَحَدِهِمَا»