Where does “ヤッラ” come from?

ヤッラ (Japanese) comes from Arabic يلا, from Arabic اللّٰه, from Proto-Semitic ʾil- — deity; god.

Ancestry of “ヤッラ”, step by step

StepLanguageWordMeaning
1Arabicيلاcome on, c’mon; let’s go, hurry up; bye-bye, bye
2ArabicاللّٰهGod, Allah; the All-highest”, “God; the...
3Proto-Semiticʾil-deity; god
Every word from Proto-Semitic ʾil- →Every word from Arabic اللّٰه →Every word from Arabic يلا →