Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:36:39 –

And the moon - We have determined for it phases, until it returns ˹appearing˺ like the old date stalk.  

And the moon — (read wa’l-qamaru, in the nominative, or wa’l-qamara, in the accusative; and it may be in the accusative because of a following verb that governs it) We have determined it, with respect to its course, ˹to run˺ in phases — twenty eight phases in twenty eight nights of every month; it becomes concealed for two nights when the month has thirty days, and for one night when it has twenty nine days — until it returns, during its final phase seeming to the ˹human˺ eye, like an aged palm-bough, in other words, like the stalk with a date cluster when it ages, becoming delicate, arched and yellowish.
القرآن:٣٦:٣٩ –

وَالْقَمَرَ قَدَّرْنَاهُ مَنَازِلَ حَتَّىٰ عَادَ كَالْعُرْجُونِ الْقَدِيمِ  

{والقمرُ} بالرفع والنصب وهو منصوب بفعل يفسره ما بعده {قدَرناه} من حيث سيره {منازل} ثمانية وعشرين منزلا في ثمان وعشرين ليلة من كل شهر، ويستتر ليلتين إن كان الشهر ثلاثين يوما وليلة إن كان تسعة وعشرين يوما {حتى عاد} في آخر منازله في رأي العين {كالعرجون القديم} أي كعود الشماريخ إذا عتق فإنه يرق ويتقوس ويصفر.