The whole prayer

Standing

Takbīr — the opening

The four words that begin the prayer and shut the world out.

اللهُ أَكْبَرُ

Allāhu akbar

Allah is greater.

Why it is said here

It is called takbīrat al-iḥrām — the takbīr that makes things forbidden. From this word onward, eating, talking and turning away are closed off to you. Notice that the word is not 'great' but 'greater': greater than the work waiting for you, greater than the worry you walked in with. You raise your hands as if setting all of it down behind your shoulders.