and worship your Lord until Certainty — Death — comes to you.
- 15:9999
وَاعْبُدْ رَبَّكَ حَتَّىٰ يَأْتِيَكَ الْيَقِينُ
And go on worshipping your Lord till the certainty (of death) comes upon you.
- common.revelation-Meccan
- common.hizb : 106
and worship your Lord until Certainty — Death — comes to you.