"And He placed therein firmly set mountains above it," meaning: above the earth. The 'rawasi' (firmly set mountains) are the mountains, so that it does not shake with you. "And He blessed it," meaning: He placed blessings in it, meaning: provisions. "And He determined therein its sustenance," its provisions, "in four days," as the completion of four days; meaning: He created the earth in two days, and its sustenance in two days, then He grouped the four days together, saying: "in four days, equal for those who ask," meaning: for those who were asking about that. And it is read...