Full Sharh — Mishkat al-Masabih 1361
عَنْ أَنَسٍ قَالَ: قَدِمَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الْمَدِينَةَ وَلَهُمْ يَوْمَانِ يَلْعَبُونَ فِيهِمَا فَقَالَ: «مَا هَذَانِ الْيَوْمَانِ؟» قَالُوا: كُنَّا نَلْعَبُ فِيهِمَا فِي الْجَاهِلِيَّةِ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " قَدْ أَبْدَلَكُمُ اللَّهُ بِهِمَا خَيْرًا مِنْهُمَا: يَوْمَ الْأَضْحَى وَيَوْمَ الْفِطْرِ ". رَوَاهُ أَبُو دَاوُد
English Translation
Anas said that when the Prophet came to Medina the people had two days on which they engaged in games. Having asked what their significance was and being told that they had engaged in games on them in the pre-Islamic period, he said, “God has substituted for them something better than them, the day of sacrifice and the day of the breaking of the fast.” Abu Dawud transmitted it.
Source
Mishkat al-Masabih(مشكاة المصابيح)
Prayer
Hadith Number
1361