Hadith on Eid: Wear your best clothes on Eid
Nafi’ reported: Abdullah ibn Umar, may Allah be pleased with him, would wear his best clothes on the days of the two Eids.
Source: al-Sunan al-Kubrá 5667
Grade: Sahih (authentic) according to Ibn Hajar
عَنْ نَافِعٍ أَنَّ ابْنَ عُمَرَ رضي الله عنه كَانَ يَلْبَسُ فِي الْعِيدَيْنِ أَحْسَنَ ثِيَابِهِ
5667 السنن الكبرى للبيهقي كتاب الجمعة باب التكبير ليلة الفطر ويوم الفطر