صَخْرَة

Appears 2 times in the Quran. (Root: صخر)
  1. He said: Did you see when we took refuge on the rock then I forgot the fish, and nothing made me forget to speak of it but the Shaitan, and it took its way into the river; what a wonder!

  2. O my son! surely if it is the very weight of the grain of a mustard-seed, even though it is in (the heart of) rock, or (high above) in the heaven or (deep down) in the earth, Allah will bring it (to light); surely Allah is Knower of subtleties, Aware;