YOU SAID:
if the mountain won't come to Muhammad, then Muhammad must go to the mountain
INTO JAPANESE
もし山がムハンマドに来ないなら、ムハンマドは山に行かなければ
BACK INTO ENGLISH
If the mountain does not come to Muhammad, Muhammad must go to the mountain
INTO JAPANESE
山がムハンマドに来なければ、ムハンマドは山に行かなければなりません
BACK INTO ENGLISH
If the mountain does not come to Muhammad, Muhammad must go to the mountain
You've done this before, haven't you.