4. Nisa · verses 85–86

مَّن يَشۡفَعۡ شَفَٰعَةً حَسَنَةٗ يَكُن لَّهُۥ نَصِيبٞ مِّنۡهَاۖ وَمَن يَشۡفَعۡ شَفَٰعَةٗ سَيِّئَةٗ يَكُن لَّهُۥ كِفۡلٞ مِّنۡهَاۗ وَكَانَ ٱللَّهُ عَلَىٰ كُلِّ شَيۡءٖ مُّقِيتٗا

Man yashfaAA shafaAAatan hasanatan yakun lahu naseebun minha waman yashfaAA shafaAAatan sayyiatan yakun lahu kiflun minha wakana Allahu AAala kulli shayin muqeetan

Whoever recommends and helps a good cause becomes a partner therein: And whoever recommends and helps an evil cause, shares in its burden: And Allah hath power over all things.

وَإِذَا حُيِّيتُم بِتَحِيَّةٖ فَحَيُّواْ بِأَحۡسَنَ مِنۡهَآ أَوۡ رُدُّوهَآۗ إِنَّ ٱللَّهَ كَانَ عَلَىٰ كُلِّ شَيۡءٍ حَسِيبًا

Waitha huyyeetum bitahiyyatin fahayyoo biahsana minha aw ruddooha inna Allaha kana AAala kulli shayin haseeban

When a (courteous) greeting is offered you, meet it with a greeting still more courteous, or (at least) of equal courtesy. Allah takes careful account of all things.