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:24:8 –

But it will prevent punishment from her if she gives four testimonies ˹swearing˺ by Allah that indeed, he is of the liars.  

And the punishment, namely, the prescribed ˹legal˺ punishment for fornication that is established upon his testimony, shall be averted from her if she testify ˹swearing˺ by God four times that he is indeed lying, in accusing her of having fornicated;
القرآن:٢٤:٨ –

وَيَدْرَأُ عَنْهَا الْعَذَابَ أَنْ تَشْهَدَ أَرْبَعَ شَهَادَاتٍ بِاللَّهِ ۙ إِنَّهُ لَمِنَ الْكَاذِبِينَ  

{ويدرأ} أي يدفع {عنها العذاب} حد الزنا الذي ثبت بشهاداته {أن تشهد أربع شهادات بالله إنه لمن الكاذبين} فيما رماها من الزنا.