The Prophet ﷺ permitted the people who provided the pilgrims with water to stay at Mecca during the nights of Mina.  

عَنِ ابْنِ عُمَرَ ؓ رَخَّصَ النَّبِيُّ ﷺ  

That the Prophet ﷺ allowed people who provided the pilgrims with water to stay at Mecca during the nights of Mina.  

أَنَّ النَّبِيَّ ﷺ أَذِنَ  

Al-Abbas asked the permission from the Prophet ﷺ to stay at Mecca during the nights of Mina in order to provide water to the people, so the Prophet ﷺ allowed him.  

أَنَّ الْعَبَّاسَ ؓ اسْتَأْذَنَ النَّبِيَّ ﷺ لِيَبِيتَ بِمَكَّةَ لَيَالِيَ مِنًى مِنْ أَجْلِ سِقَايَتِهِ فَأَذِنَ لَهُ