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 Taiseer ul-Quran (Facilitation of the Quran) is a comprehensive Quran commentary by Maulana Abdul Rahman Kilani, a renowned Salafi (Ahl al-Hadith) scholar from Pakistan. Known for his eloquent and accessible writing style, Kilani authored this tafsir with a focus on clarity — making Quranic meanings understandable to the common reader. The tafsir provides detailed historical context for verses related to battles and expeditions, and firmly refutes modernist ideologies using strong scriptural evidence. It is widely regarded as an invaluable resource for understanding the Quran and countering deviant interpretations. The tafsir is originally written in Urdu, translated to English by tohed.com.

39. And We have determined phases for the moon until it returns like an old, withered date stalk [37].

[37]
The Phases of the Moon and the Lunar Mansions:

The sun always rises from the east and sets in the west in the evening. Its shape also remains the same, so there is never any change in its routine. However, the matter of the moon is entirely different from this. At the beginning of any lunar month, it appears in the west and looks just like a thin crescent, which the Quran has likened to an old and dry date stalk, and it is called the hilal (crescent). On the second day, it becomes a bit thicker and appears shifted towards the east. In this way, it keeps getting thicker day by day and keeps changing its shapes, and the moon keeps forming until after seven days it rises directly overhead and takes the shape of a half-circle. Then, on the fourteenth day, it rises from the east and is completely round. Thus, every day it changes its shape and every day its mansion is different. Then it starts waning and again takes the shape of a crescent as before. These are the mansions appointed by Allah Almighty for the moon.