SourceA per Law the bowler is permitted to attempt to run out the non-striker, before releasing the ball and provided he has not completed his usual delivery swing,
Your screenshot shows Ash has not fully roll his shoulder so Question arise why did batter left without watching it ?
Check the video in this thread. It compares Ashwin's normal action vs what action he did to get buttler out. Also contains slow-mo.
The video and the replies in that thread should answer all your questions.
@Every1 Infact Would recommend all of you to watch this video to make up your mind.
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