Returning a greeting to a disbeliever

إذَا سَلَّمَ عَلَيْكُمْ أَهْلُ الْكِتَابِ فَقُولُوا: وَعَلَيْكُمْ

If one of the People of the Scripture (i.e., Christians and Jews) greets you saying As-Salaamu alaykum, then say (to him): 'Wa alaykum' And upon you .

If one of the People of the Scripture (i. e. Christians and Jews) greets you saying As-Salaamu `alaykum, then say (to him): And upon you .