Narrated Nubayshah: The Prophet (ﷺ) said: We forbade you to eat their meat for more than three days in order that you might have abundance; now Allah has produced abundance, so you may eat, store up and seek reward. Beware, these days are days of eating, drinking and remembrance of Allah, Most High.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، حَدَّثَنَا خَالِدٌ الْحَذَّاءُ، عَنْ أَبِي الْمَلِيحِ، عَنْ نُبَيْشَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّا كُنَّا نَهَيْنَاكُمْ عَنْ لُحُومِهَا أَنْ تَأْكُلُوهَا فَوْقَ ثَلاَثٍ لِكَىْ تَسَعَكُمْ فَقَدْ جَاءَ اللَّهُ بِالسَّعَةِ فَكُلُوا وَادَّخِرُوا وَاتَّجِرُوا أَلاَ وَإِنَّ هَذِهِ الأَيَّامَ أَيَّامُ أَكْلٍ وَشُرْبٍ وَذِكْرِ اللَّهِ عَزَّ وَجَلَّ " .
sunnah.com