in a syllabus, when you want to name the course code
you mention only three (or,sometimes, four) characters
that represent the program number.

E.g:
ECE 405 = Electrical and Computer Engineering , 405
HIS 107 = History , 107
ENG 789 = English Literature , 789
etc...

So, here, either use ISL (ISLAM) or if you want SLM = سلم