وَاعْبُدْ رَبَّكَ حَتَّى يَأْتِيَكَ الْيَقِينُ
and worship your Lord until certainty comes to you.
Agha Ali Puya Commentary
Commentary on Quran 15:99
[Pooya/Ali Commentary 15:99] Imam Ali said: "There is nothing greater in certainty than death."
The Rocky Tract
15. Al-Ḥijr
الحجر
al-Ḥijr (Hijr)
ٱلْحِجْر
15:99
wa-ʿbud rabbaka ḥattā yaʾtiyaka l-yaqīnu
and worship your Lord until certainty comes to you.