Al-A'raf 7:171

Wa-ith nataqna aljabalafawqahum kaannahu thullatun wathannooannahu waqiAAun bihim khuthoo ma ataynakumbiquwwatin wathkuroo ma feehi laAAallakumtattaqoon

And [mention] when We raised the mountain above them as if it was a dark cloud and they were certain that it would fall upon them, [and Allāh said], "Take what We have given you with determination and remember what is in it that you might fear Allāh."

When We raised the mountain over them as though it were a canopy, and they thought it was falling upon them, (We said,) “Adhere firmly to what We have given you and remember what is therein, so that you may become God-fearing.”