Hadithcore
Sahih al-Bukhari, 957
sahih

Narrated `Abdullah bin `Umar:

Allah's Messenger (ﷺ) used to offer the prayer of `Id-ul-Adha and `Id-ul-Fitr and then deliver the Khutba after the prayer.

حَدَّثَنَا إِبْرَاهِيمُ بْنُ الْمُنْذِرِ، قَالَ حَدَّثَنَا أَنَسٌ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ،‏.‏ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُصَلِّي فِي الأَضْحَى وَالْفِطْرِ، ثُمَّ يَخْطُبُ بَعْدَ الصَّلاَةِ‏.‏

References2 variants
In-Book Reference
Book 13, Hadith 9
USC-MSA web (English) reference
Vol. 2, Book 15, Hadith 77 (deprecated numbering scheme)
Sharh · explanationclick to expand
The Prayer of ‘Eid has requisites, recommended actions, and etiquettes that the Prophet ﷺ always ensured to perform. His noble Companions transmitted his traditions and the way he performed them for us. In this hadeeth, Ibn ʿUmar (may Allah be pleased the both of them) reports that the way of the Prophet ﷺ handled the prayer of the two ‘Eids was to: deliver the sermon after the prayer, as opposed to the Friday prayer, in which the sermon precedes the prayer, and that sermon of ‘Eid consists of two parts, similar to that of the [ones] delivered on Friday. The sermon is legislated on Fridays, ‘Eids, and [other] occasions for many reasons. One of them is that the people learn about the matters of religion and worldly affairs. For this reason, whenever the Imaam ascends on to the pulpit, he should make it his goal to teach the people and instruct them - especially on religious correlations that coincide with that sermon. This is based on the report that al-Bukhaaree recorded about the description of the sermon of the Prophet ﷺaccording to Abu Saʿeed al-Khudree(may Allah be pleased with him). In this report, he explained that the first thing that he ﷺ began with was the performance of the ‘Eid prayer. Then, after he finished the prayer, he ﷺ turned towards the people, and stood up facing the congregation. The people would [remain] seated in their rows as he ﷺ delivered the sermon to them, during which he admonished, advised, and gave them orders. .