The Heights - 7:171
"We shook the mountain over them like an umbrella, so that they thought it would fall on them: "Hold fast to what I have given you. Meditate on its contents so that you may be saved."
Related:
The Cow/2:63
"We once took a promise from you when We raised Mount Sinai over you, saying: "Hold fast to what We have given you and remember what is in it, that you may be protected"."
The Cow/2:93
"Remember when We raised Mount Tur over you and took a promise from you: "Hold fast to what I command you and listen."But they said: "We listened and disobeyed". Because of their disbelief, their hearts were deceived by the calf. Say: "If you have believed, how badly your faith is guiding you!"
The Women/4:154
"We raised Mount Sinai above them, and We said to them, "Enter humbly through the gate."We said to them, "Do not transgress the prohibition of Saturday"; and We took from them a firm promise."
The Heights/7:171
"We shook the mountain over them like an umbrella, so that they thought it would fall on them: "Hold fast to what I have given you. Meditate on its contents so that you may be saved."