What do we think ALAIGH SALAM is used only with Prophets and Messengers send by God?
Then sorry to say we forgot something. That is Hazrat JIBRAEL, MAKAEEL and Hazrat ISRAFEEL are not Prophets (Nabi's) and why do we use ALAIGH-e-SALAM with them.
We are badely mistaken.
Allah called His prophet Muhammad (P.B.U.H) with different names in Quran and one of those names is ' YASIN '. Agreed?
Now Allah himself says in Quran that, 'Salamun Ala ALL-ay-YASIN' means salam on households of Prophet (P.B.U.H) .
Haven't we heared SALAWAT in which ALLAH himself sends SALAWAT on Prophet (P.B.U.H) and his households along with Hazrat IBRAHIM (A.S) and his households.
Salawat is the EBADAT which ALLAH too practices along with Muslims.