Learn Salah
Qiyam — Standing

Takbirتَكْبِيرَةُ الإِحْرَام

Hands are raised to the earlobes (Hanafi) and then folded — the physical act of entering the state of prayer. This single declaration locks out the world and locks in your focus on Allah.

اللَّهُ أَكْبَرُ

Allahu Akbar.

Allah is the Greatest.

Hadith
The opening of Salah is the Takbir and its closing is the Tasleem.
Abū Dāwūd 61; al-Tirmidhī 3 — ḥasan ṣaḥīḥ

اللَّهُ

Allahu

Allah

أَكْبَرُ

Akbaru

is the Greatest