The Quran

دَعواهُم فيها سُبحانَكَ اللَّهُمَّ وَتَحِيَّتُهُم فيها سَلامٌ ۚ وَآخِرُ دَعواهُم أَنِ الحَمدُ لِلَّهِ رَبِّ العالَمينَ

Muhammad Asad

[and] in that [state of happiness] they will call out,¹ "Limitless art Thou in Thy glory, O God!" - and will be answered with the greeting, "Peace !"² And their call will close with [the words], "All praise is due to God, the Sustainer of all the worlds!"

Lit., "their invocation (da'wa) therein [will be]...", etc.
Lit., "their greeting therein [will be], 'Peace"'. For an explanation of the term salam and its fundamental connotation of inner peace, fulfilment, and security from all that is evil, see Sarah 5, note 29.