Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:2:199 –

Then depart from the place from where ˹all˺ the people depart and ask forgiveness of Allah. Indeed, Allah is Forgiving and Merciful.  

Then (thumma denotes the sequence intended) press on, O Quraysh, from where the people press on, that is, from ‘Arafa, by standing there together with them (for, they used to stand at Muzdalifa, disdaining to stand with other people); and seek God’s forgiveness, for your sins; God is Forgiving, Merciful, to the believers.
القرآن:٢:١٩٩ –

ثُمَّ أَفِيضُوا مِنْ حَيْثُ أَفَاضَ النَّاسُ وَاسْتَغْفِرُوا اللَّهَ ۚ إِنَّ اللَّهَ غَفُورٌ رَحِيمٌ  

{ثم أفيضوا} يا قريش {من حيث أفاض الناس} أي من عرفة بأن تقفوا بها معهم وكانوا يقفون بالمزدلفه ترفعا عن الوقوف معهم وثم للترتيب في الذكر {واستغفروا الله} من ذنوبكم إن الله غفور} للمؤمنين {رحيم} بهم.

See similar narrations below:

Collected by Qurʾān
quran:4:106 –

And seek forgiveness of Allah. Indeed, Allah is ever Forgiving and Merciful.  

And pray for forgiveness from God, for that which you considered doing; surely God is ever Forgiving, Merciful.
القرآن:٤:١٠٦ –

وَاسْتَغْفِرِ اللَّهَ ۖ إِنَّ اللَّهَ كَانَ غَفُورًا رَحِيمًا  

{واستغفر الله} مما هممت به {إن الله كان غفورا رحيما}.