Narrated Abdullah ibn as-Sa'ib:

I attended the 'Id prayer along with the Messenger of Allah ﷺ. When he finished the prayer, he said: We shall deliver the sermon; he who likes to sit for listening to it may sit and he who likes to go away may go away.

Abu Dawud said: this is a mursal tradition (i.e. the successor 'Ata directly reporting from the Prophet ﷺ and omitting the link of the Companions).

حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ الْبَزَّازُ، حَدَّثَنَا الْفَضْلُ بْنُ مُوسَى السِّيْنَانِيُّ، حَدَّثَنَا ابْنُ جُرَيْجٍ، عَنْ عَطَاءٍ، عَنْ عَبْدِ اللَّهِ بْنِ السَّائِبِ، قَالَ شَهِدْتُ مَعَ رَسُولِ اللَّهِ ﷺ الْعِيدَ فَلَمَّا قَضَى الصَّلاَةَ قَالَ
" إِنَّا نَخْطُبُ فَمَنْ أَحَبَّ أَنْ يَجْلِسَ لِلْخُطْبَةِ فَلْيَجْلِسْ وَمَنْ أَحَبَّ أَنْ يَذْهَبَ فَلْيَذْهَبْ " . قَالَ أَبُو دَاوُدَ هَذَا مُرْسَلٌ عَنْ عَطَاءٍ عَنِ النَّبِيِّ ﷺ .