Abu Hurairah Radi allahu anhu se rivayat hai ki Rasool-Allah Sal-Allahu Alaihi Wasallam ne farmaya agar tum mein se koi mujhe salam karta hai to Allah Subhanhu meri rooh ko wapas lauta deta hai aur main uskey salam ka jawab deta hu......(Sunan Abu Dawud,Jild 2,273-HasanAt-Tabrani, 3187-SahihAl Bayhaqi, 9519-SahihMasnad Ahmed, 10590-Hasan