Translation of the verse 5 from Surah Yunus : Number of verses 109 - - page 208 - Part 11.
It is He Who made the sun a shining thing and the moon as a light and measured out its (their) stages, that you might know the number of years and the reckoning. Allah did not create this but in truth. He explains the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) in detail for people who have knowledge.
It is He who made the sun a shining light and the moon a derived light and determined for it phases - that you may know the number of years and account [of time]. Allah has not created this except in truth. He details the signs for a people who know
(10:5) He it is Who gave the sun radiance and the moon light, and determined the stages (for the waxing and waning of the moon) that you may learn the calculation of years and the reckoning of time. Allah has created all this with a rightful purpose (rather than out of play). He expounds His signs for the people who know.