From Quran
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ تُوبُوٓاْ إِلَى ٱللَّهِ تَوۡبَةٗ نَّصُوحًا عَسَىٰ رَبُّكُمۡ أَن يُكَفِّرَ عَنكُمۡ سَيِّـَٔاتِكُمۡ وَيُدۡخِلَكُمۡ جَنَّٰتٖ تَجۡرِي مِن تَحۡتِهَا ٱلۡأَنۡهَٰرُ يَوۡمَ لَا يُخۡزِي ٱللَّهُ ٱلنَّبِيَّ وَٱلَّذِينَ ءَامَنُواْ مَعَهُۥۖ نُورُهُمۡ يَسۡعَىٰ بَيۡنَ أَيۡدِيهِمۡ وَبِأَيۡمَٰنِهِمۡ يَقُولُونَ رَبَّنَآ أَتۡمِمۡ لَنَا نُورَنَا وَٱغۡفِرۡ لَنَآۖ إِنَّكَ عَلَىٰ كُلِّ شَيۡءٖ قَدِيرٞ
التحريم : ٨
O you who have believed, repent to Allah with sincere repentance. Perhaps your Lord will remove from you your misdeeds and admit you into gardens beneath which rivers flow [on] the Day when Allah will not disgrace the Prophet and those who believed with him. Their light will proceed before them and on their right; they will say, “Our Lord, perfect for us our light and forgive us. Indeed, You are over all things competent.”
Surah At-Tahreem: 8
Hadith: Arabic Text followed by English Translation.
عن أبي موسى عبد الله بن قيس الأشعرى رضي الله عنه عن النبي صلى الله عليه وسلم قال
إن الله تعالى يبسط يده بالليل ليتوب مسيء النهار، ويبسط يده بالنهار ليتوب مسيء الليل حتى تطلع الشمس من مغربها
رواه مسلم ٢٧٥٩
Abu Musa Al-Ash’ari (May Allah be pleased with him) reported: The Prophet (ﷺ) said:
Allah, the Exalted, will continue to stretch out His Hand in the night so that the sinners of the day may repent, and continue to stretch His Hand in the daytime so that the sinners of the night may repent, until the sun rises from the west
Narrated by Muslim, 2759