He who seeks repentance (from the Lord) before the rising of the sun from the west (before the Day of Resurrection), Allah turns to him with Mercy. (Using translation from Muslim 2703)

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ تَابَ قَبْلَ أَنْ تَطْلُعَ الشَّمْسُ مِنْ مَغْرِبِهَا تَابَ اللهُ عَلَيْهِ