Chapter: Before sleeping

Status Reference : Hisn al-Muslim 106

سُبْحَانَ اللَّهِ (ثلاثاً وثلاثين)
وَالْحَمْدُ لِلَّهِ (ثلاثاً وثلاثين)
وَاللَّهُ أَكْبَرُ (أربعاً وثلاثينَ)

English Translation:

Subḥānallāh,
Wa ‘l-ḥamdu lillāh,
Wallāhu Akbar.

Glory is to Allah (thirty-three times in Arabic),
Praise is to Allah (thirty-three times),
Allah is the Most Great (thirty-four times)

Reference:
Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 7/71, Muslim 4/2091.