It is narrated from Ubaydullah bin Abdullah (may Allah have mercy on him) that Umar bin Khattab (may Allah be pleased with him) asked Abu Waqid Al-Laithi (may Allah be pleased with him): "What would the Messenger of Allah (ﷺ) recite in the prayers of Eid al-Adha and Eid al-Fitr?" He replied: "He (ﷺ) would recite: 'Qaf, by the Glorious Qur'an' (__QUR_N__) and 'The Hour has drawn near' (__QUR_N__).”
Hadith Referenceمسند الإمام الشافعي / كتاب العيدين والأضاحي والاستسقاء / 497
Hadith Takhrijاخرجـہ مسلم، العیدین، باب ما یقرأ فی صلاۃ العیدین (891)۔