Ayah 15:99
وَٱعْبُدْ رَبَّكَ حَتَّىٰ يَأْتِيَكَ ٱلْيَقِينُ
Arabic transliteration · Source: TanzilWaoAAbud rabbaka hatta yatiyaka alyaqeenu
English · Saheeh InternationalAnd worship your Lord until there comes to you the certainty (death).
German · Bubenheim & Elyasund diene deinem Herrn, bis die Gewißheit zu dir kommt.