Narrated Abu Huraira (RA): The Prophet (ﷺ) said: The person who says -

لَا إِلَهَ إِلَّا اللَّهُ وَاللَّهُ أَكْبَرُ

Laa ilaaha ill-Allahu wAllahu akbar

None has the right to be worshipped except Allah and Allah is the greatest. His Lord affirms his statement and says: ‘There is none worthy of worship except Me, and I am the Greatest,’

Reference: Sahih (Albani). Tirmidhi: 3430