One time when I was ill, in a state between sleeping and waking, [the following] occurred to me about “And the sun runs it course to a place appointed.”(36:38) That is, [it turns] “in” its appointed place so that its [the solar] system can be upheld. That is, by rotating it generates the force of attraction [gravity] which holds the solar system in its order. Otherwise, it would fall apart. (This sleepy footnote is subtle and meaningful) – Said Nursi
In his work Lemeât (1921) (See, The Words, 732.) Said Nursi expressed this idea in “semi-verse:”
The sun is a fruit-bearing tree; it shakes itself so that the planets fall not, its fruits.
If it rested motionless the attraction would cease, and they would weep through space, its ecstatics.
See, al-Suyūṭī, Kanz al-‘Ummāl, x, 307; al-Firdaws, v, 359.