Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “The best day on which the sun has risen is Friday. Adam was created on Friday and on it he entered Paradise and on it he was expelled from therein. The Hour will not be established but on Friday.”
Source: Ṣaḥīḥ Muslim 854
Grade: Sahih (authentic) according to Muslim
عَنْ أَبِي هُرَيْرَةَ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ خَيْرُ يَوْمٍ طَلَعَتْ عَلَيْهِ الشَّمْسُ يَوْمُ الْجُمُعَةِ فِيهِ خُلِقَ آدَمُ وَفِيهِ أُدْخِلَ الْجَنَّةَ وَفِيهِ أُخْرِجَ مِنْهَا وَلَا تَقُومُ السَّاعَةُ إِلَّا فِي يَوْمِ الْجُمُعَةِ
854 صحيح مسلم كتاب الجمعة باب فضل يوم الجمعة