QS. Al-Baqarah [2:14]

wa‑idzaa laquu alladziina aamanuu qaaluu aamannaa wa‑idzaa khalaw ilaa syayaathiinihim qaaluu innaa ma'akum innamaa nahnu mustahzi‑uuna

And when they meet those who believe, they say, "We believe"; but when they are alone with their evil ones, they say, "Indeed, we are with you; we were only mockers." [14]

— Sahih International