Ka’ab bin ‘Ujrah said that the Apostle of Allaah ﷺ said to him, If you like sacrifice an animal or if you like fast three days or if you like give three sa’s of dates to six poor people. (Using translation from Abū Dāʾūd 1857)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَهُ «إِنْ شِئْتَ فَانْسُكْ نَسِيكَةً وَإِنْ شِئْتَ فَصُمْ ثَلَاثَةَ أَيَّامٍ وَإِنْ شِئْتَ فَأَطْعِمْ ثَلَاثَةَ آصُعٍ مِنْ تَمْرٍ سِتَّ مَسَاكِينٍ»