One should not fast during the Days of Tashriq

The days of Tashriq are the days of eating and drinking.

قَالَ رَسُولُ اللَّهِ ﷺ أَيَّامُ التَّشْرِيقِ أَيَّامُ أَكْلٍ وَشُرْبٍ

I met Abu Malih and asked him and he narrated it to me from the Messenger of Allah ﷺ. a hadith like one (narrated above) with this addition:" And remembrance of Allah"

عَنْ نُبَيْشَةَ قَالَ خَالِدٌ فَلَقِيتُ أَبَا الْمَلِيحِ فَسَأَلْتُهُ فَحَدَّثَنِي بِهِ فَذَكَرَ عَنِ النَّبِيِّ ﷺ بِمِثْلِ حَدِيثِ هُشَيْمٍ وَزَادَ فِيهِ وَذِكْرٍ لِلَّهِ

None but the believer would be admitted into Paradise, and the days of Mina' are the days meant for eating and drinking.

أَنَّهُ حَدَّثَهُ أَنَّ رَسُولَ اللَّهِ ﷺ بَعَثَهُ وَأَوْسَ بْنَ الْحَدَثَانِ أَيَّامَ التَّشْرِيقِ فَنَادَى أَنَّهُ لاَ يَدْخُلُ الْجَنَّةَ إِلاَّ مُؤْمِنٌ وَأَيَّامُ مِنًى أَيَّامُ أَكْلٍ وَشُرْبٍ

Both of them made the announcement."

أَنَّهُ قَالَ فَنَادَيَا