The Meccan Revelations: Page 459 from Volume One

And therefore

He said regarding the people of Medina and whatever was on its line, “east” meaning in turning to the Qiblah in prayer, and do not set, that is, watch the sun from where it is rising, for it rises and annihilates you, so no place or trace remains for you.

God Almighty said, “O people of Yathrib, there is no place for you.” So He, peace be upon him, warned that this is the noblest place, unlike the sunrise, for in the sunrise a person can look at the extension of his shadow and can look at the exaltation of the truth by inclining away from it, unlike the sunrise in significance.

p> So he, may God’s prayers and peace be upon him, said, “Rise and do not set.

That is, take your knowledge of God from this evidence, for it is more probable than sunset .