Hadithcore
Sunan an-Nasa'i, 1569
sahih· Darussalam

It was narrated that 'Ata said:

"I heard Ibn 'Abbas say: 'I bear witness that I attended 'Eid with the Messenger of Allah (ﷺ); he started with the prayer before the Khutbah, then he delivered the Khutbah.'"

أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ سَمِعْتُ أَيُّوبَ، يُخْبِرُ عَنْ عَطَاءٍ، قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ، يَقُولُ أَشْهَدُ أَنِّي شَهِدْتُ الْعِيدَ مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَبَدَأَ بِالصَّلاَةِ قَبْلَ الْخُطْبَةِ ثُمَّ خَطَبَ ‏.‏

References2 variants
In-Book Reference
Book 19, Hadith 14
English Reference
Vol. 2, Book 19, Hadith 1570