سُوْرَةُ يٰسٓ

Surah Yaseen (36) — Ayah 39

Yaseen · Meccan · Juz 23 · Page 442

وَٱلْقَمَرَ قَدَّرْنَـٰهُ مَنَازِلَ حَتَّىٰ عَادَ كَٱلْعُرْجُونِ ٱلْقَدِيمِ ﴿39﴾
And the moon, We have measured for it mansions (to traverse) till it returns like the old dried curved date stalk.
وَٱلْقَمَرَ wal-qamara And the moon
قَدَّرْنَـٰهُ qaddarnāhu We have ordained for it
مَنَازِلَ manāzila phases
حَتَّىٰ ḥattā until
عَادَ ʿāda it returns
كَٱلْعُرْجُونِ kal-ʿur'jūni like the date stalk
ٱلْقَدِيمِ l-qadīmi the old

Tafsir Ahsan al-Bayan is a well-known Quran commentary by Hafiz Salahuddin Yusuf, a renowned Salafi (Ahl al-Hadith) scholar from Pakistan. This tafsir explains the meanings of the Quran in accordance with the methodology of the Salaf (early righteous generations), relying on authentic sources and straightforward language. Due to its reliability and adherence to sound Islamic scholarship, the Saudi government publishes and distributes this tafsir among the Hujjaj (pilgrims) visiting the Haramain. The tafsir is originally written in Urdu, translated to English by tohed.com.

39. 1 The moon has 28 stations; each day it traverses one station, then after being hidden, it appears again on the third night.

39. 2 That is, when it reaches the last station, it becomes very thin and small, like an old date stalk that has dried and become bent. From these very cycles of the moon, people calculate their days, months, and years, and determine the timings of their acts of worship.