Procedure
The provision as it is printed, and everything on Ruleside that turns on it.
As the purpose of the countdown is to maintain the tempo of the match by preventing time-wasting at throw-ins and goal kicks, the player should not be penalised if they are in the process of throwing/kicking the ball as the referee reaches the end of the countdown.
Verdicts that turn on it 2
Walk the tree to any of these and this clause is part of the answer.
Explained in the rules library 1
The plain-language pages that build on this provision.
The Laws of the Game are published by The IFAB and quoted here for the purpose of explaining the decisions on this site. Ruleside is not affiliated with The IFAB or FIFA. Every clause of Notes and modifications that Ruleside cites.