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:41:34 –

And not equal are the good deed and the bad. Repel ˹evil˺ by that ˹deed˺ which is better; and thereupon the one whom between you and him is enmity ˹will become˺ as though he was a devoted friend.  

And they are not equal, the good deed and the evil deed, ˹even˺ with respect to their subdivisions, because any number of such ˹good deeds˺ are ˹always˺ above any number of the latter. Repel, the evil deed, with that, in other words, with that trait, which is better, such as ˹repelling˺ anger with endurance, ignorance with forbearance, and ˹the intention to inflict˺ harm with pardon, then, behold, he between whom and you there was enmity will be as though he were a dear friend, in other words, then your enemy will become like a close friend in terms of ˹his˺ affection ˹for you˺, if you act in such a way (alladhī, ‘he … whom’, is the subject; ka-annahu, ‘as though’, is the predicate; idhā is an adverbial particle for ˹expressing˺ the comparative import).
القرآن:٤١:٣٤ –

وَلَا تَسْتَوِي الْحَسَنَةُ وَلَا السَّيِّئَةُ ۚ ادْفَعْ بِالَّتِي هِيَ أَحْسَنُ فَإِذَا الَّذِي بَيْنَكَ وَبَيْنَهُ عَدَاوَةٌ كَأَنَّهُ وَلِيٌّ حَمِيمٌ  

{ولا تستوي الحسنة ولا السيئة} في جزئياتهما بعضهما فوق بعض {ادفع} السيئة {بالتي} أي بالخصلة التي {هي أحسن} كالغضب بالصبر والجهل بالحلم والإساءة بالعفو {فإذا الذي بينك وبينه عداوة كأنه ولي حميم} أي فيصير عدوك كالصديق القريب في محبته إذا فعلت ذلك فالذي مبتدأ وكأنه الخبر وإذا ظرف لمعنى التشبيه.