Tafsir of Surah An-Nisaa 4:86
﴿وَإِذَا حُيِّيتُم بِتَحِيَّةٍ فَحَيُّوا بِأَحْسَنَ مِنْهَا أَوْ رُدُّوهَا إِنَّ اللَّهَ كَانَ عَلَىٰ كُلِّ شَيْءٍ حَسِيبًا﴾
Translation of the meaning
And when you are greeted with a greeting, greet [in return] with one better than it or [at least] return it [in a like manner]. Indeed Allāh is ever, over all things, an Accountant.
English Translation - Noor International Center — v1.1.2 · QuranEnc.comThe words of the two imams are given in their original Arabic, verbatim, with references.
Shaykh al-Islam Ibn Taymiyyah
ولهذا كان الرد من باب العدل المأمور به الواجب لكل مسلم إذا كان سلامه مشروعا،«الإخنائية (أو الرد على الإخنائي)» 1/298