Sura al-Baqara 2:160

إِلَّا ٱلَّذِينَ تَابُوا۟ وَأَصْلَحُوا۟ وَبَيَّنُوا۟ فَأُو۟لَٰٓئِكَ أَتُوبُ عَلَيْهِمْ وَأَنَا ٱلتَّوَّابُ ٱلرَّحِيمُ

illā lladhīna tābū wa-aṣlaḥū wa-bayyanū fa-ūlāʾika atūbu ʿalayhim wa-annā l-tawwābu l-raḥīmu

Except those who repent and make amends and openly declare (the Truth): To them I turn; for I am Oft-returning, Most Merciful.

Sura al-Nisāʾ 4:18

وَلَيْسَتِ ٱلتَّوْبَةُ لِلَّذِينَ يَعْمَلُونَ ٱلسَّيِّـَٔاتِ حَتَّىٰٓ إِذَا حَضَرَ أَحَدَهُمُ ٱلْمَوْتُ قَالَ إِنِّى تُبْتُ ٱلْـَٰٔنَ وَلَا ٱلَّذِينَ يَمُوتُونَ وَهُمْ كُفَّارٌ أُو۟لَٰٓئِكَ أَعْتَدْنَا لَهُمْ عَذَابًا أَلِيمًا

wa-laysati l-tawbatu li-lladhīna yaʿmalūna l-sayyiʾāti ḥatta idhā ḥaḍara aḥadahumu l-mawtu qalā innī tubtu l-ana wa-lā lladhīna yamūtūna wa-hum kuffārun ulāʾika aʿtadnā lahum ʿadhāban alīman

Of no effect is the repentance of those who continue to do evil, until death faces one of them, and he says, "Now have I repented indeed;" nor of those who die rejecting Faith: for them have We prepared a punishment most grievous.

Sura al-Aʿrāf 7:143

وَلَمَّا جَآءَ مُوسَىٰ لِمِيقَٰتِنَا وَكَلَّمَهُۥ رَبُّهُۥ قَالَ رَبِّ أَرِنِىٓ أَنظُرْ إِلَيْكَ قَالَ لَن تَرَىٰنِى وَلَٰكِنِ ٱنظُرْ إِلَى ٱلْجَبَلِ فَإِنِ ٱسْتَقَرَّ مَكَانَهُۥ فَسَوْفَ تَرَىٰنِى فَلَمَّا تَجَلَّىٰ رَبُّهُۥ لِلْجَبَلِ جَعَلَهُۥ دَكًّا وَخَرَّ مُوسَىٰ صَعِقًا فَلَمَّآ أَفَاقَ قَالَ سُبْحَٰنَكَ تُبْتُ إِلَيْكَ وَأَنَا۠ أَوَّلُ ٱلْمُؤْمِنِينَ

wa-lammā jāa mūsā limīqātinā wa-kallamahu rabbuhu qalā rabbi arinī anẓur ilayka qalā lan taranī wa-lākini inẓur ilā l-jabali fa-ini staqarra makānahu fa-sawfa taranī fa-lammā tajallā rabbuhu lil-jabali jaʿalahu dakkan wa-kharra mūsā ṣaʿiqan fa-lammā afāqa qalā subḥānaka tubtu ilayka wa-anā awwalu l-muʾminīna

When Moses came to the place appointed by Us, and his Lord addressed him, He said: "O my Lord! show (Thyself) to me, that I may look upon thee." Allah said: "By no means canst thou see Me (direct); But look upon the mount; if it abide in its place, then shalt thou see Me." When his Lord manifested His glory on the Mount, He made it as dust. And Moses fell down in a swoon. When he recovered his senses he said: "Glory be to Thee! to Thee I turn in repentance, and I am the first to believe."

Sura al-Aḥqāf 46:15

وَوَصَّيْنَا ٱلْإِنسَٰنَ بِوَٰلِدَيْهِ إِحْسَٰنًا حَمَلَتْهُ أُمُّهُۥ كُرْهًا وَوَضَعَتْهُ كُرْهًا وَحَمْلُهُۥ وَفِصَٰلُهُۥ ثَلَٰثُونَ شَهْرًا حَتَّىٰٓ إِذَا بَلَغَ أَشُدَّهُۥ وَبَلَغَ أَرْبَعِينَ سَنَةً قَالَ رَبِّ أَوْزِعْنِىٓ أَنْ أَشْكُرَ نِعْمَتَكَ ٱلَّتِىٓ أَنْعَمْتَ عَلَىَّ وَعَلَىٰ وَٰلِدَىَّ وَأَنْ أَعْمَلَ صَٰلِحًا تَرْضَىٰهُ وَأَصْلِحْ لِى فِى ذُرِّيَّتِىٓ إِنِّى تُبْتُ إِلَيْكَ وَإِنِّى مِنَ ٱلْمُسْلِمِينَ

wa-waṣṣaynā l-insāna bi-wālidayhi iḥsānan ḥamalathu ummuhu kurhan wa-waḍaʿathu kurhan wa-ḥamluhu wa-fiṣāluhu thalāthūna shahran ḥatta idhā balagha ashuddahu wa-balagha arbaʿīna sanatan qalā rabbi awziʿnī an ashkura niʿmataka allatī anʿamta ʿalayya wa-ʿalā wālidayya wa-an aʿmala ṣāliḥan tarḍāhu wa-aṣliḥ lī fī dhurriyyatī innī tubtu ilayka wa-innī mina l-muslimīna

We have enjoined on man kindness to his parents: In pain did his mother bear him, and in pain did she give him birth. The carrying of the (child) to his weaning is (a period of) thirty months. At length, when he reaches the age of full strength and attains forty years, he says, "O my Lord! Grant me that I may be grateful for Thy favour which Thou has bestowed upon me, and upon both my parents, and that I may work righteousness such as Thou mayest approve; and be gracious to me in my issue. Truly have I turned to Thee and truly do I bow (to Thee) in Islam."