Origin: Malay – Malay word for wrong, incorrect.
Salah is the malay word to inform that a person or something is wrong or incorrect.
Ah Beng: “Eh Ibrahim, last time our idol Fandi Ahmad used to play for Ajax Amsterdam in Holland right?
Ibrahim: Salah lah bro, he went for a trial with Ajax but refused the contract they offered him. He did eventually play in the Dutch Eredivisie for FC Groningen in 1983.