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Al-Bukhari (2994)اللَّهُ أَكْبَرُ (عِنْدَ الصُّعُودِ) وَسُبْحَانَ اللَّهِ (عِنْدَ النُّزُولِ)
Allahu Akbar ('indas-su'ud) wa SubhanAllah ('indan-nuzul).
Allah is the Greatest (when ascending) and Glory be to Allah (when descending).
Virtue
The Prophet ﷺ and his companions would say takbir when ascending and tasbih when descending.
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