Hadithcore
Riyad as-Salihin, 1561

Abu Hurairah (May Allah be pleased with him) said:

The Messenger of Allah (ﷺ) said, "When two persons indulge in abusing each other, the beginner will be the sinner so long as the oppressed does not transgress the limits." <b>[Muslim]</b>.

وعن أبي هريرة رضي الله عنه أن رسول الله صلى الله عليه وسلم قال‏:‏ ‏

‏المتسابان ما قالا فعلى البادي منهما حتى يعتدي المظلوم‏

‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 17, Hadith 51
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) It is permissible for a wronged person to return the offense without transgression: {But whoever retaliates after being wronged, there is no blame on them.}<br> 1) Patience and pardoning Muslims are recommended if this would result in realizing an interest; {but whoever pardons and seeks reconciliation, his reward is with Allah}