Is the method mentioned in the article valid for repelling intrusive thoughts during prayer by seeking refuge (Isti‘adha) and spitting dryly to the left three times? And is a light Isti‘adha sufficient without spitting dryly when the intrusive thoughts are minor?

If a worshiper feels the whisperings of Satan during prayer, he should seek refuge in Allah from him and spit to his left three times (a light spitting with a little saliva), and say in a low voice: "A'udhu billahi min ash-shaytanir-rajim (I seek refuge in Allah from the accursed Satan)," following the guidance of the Prophet, peace and blessings be upon him, when Uthman ibn Abi al-'As complained to him about the whisperings of the devil named "Khanzab" during his prayer.