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.
quran:53:1In the name of Allah, the Entirely Merciful, the Especially Merciful.

By the star when it descends,  

By the Star — the constellation Pleiades (al-thurayya) — when it sets, ˹when˺ it disappears,
القرآن:٥٣:١بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ

وَالنَّجْمِ إِذَا هَوَىٰ  

{والنَّجم} الثريا {إذا هوى} غاب.