The Prophet [SAW] commanded him to call out on the days of At-Tashriq that no one would enter Paradise except a believer, and that these were the days of eating and drinking.
أَنَّ النَّبِيَّ ﷺ أَمَرَهُ أَنْ يُنَادِيَ أَيَّامَ التَّشْرِيقِ أَنَّهُ لاَ يَدْخُلُ الْجَنَّةَ إِلاَّ مُؤْمِنٌ وَهِيَ أَيَّامُ أَكْلٍ وَشُرْبٍ