How To Restrict The Whispers Of Shaitan! Ibn al-Qayyim رحمه اللّٰه said: Fasting tightens the veins which are the place wherein Shaytan flows within the son of Adam. Thus, by way of fasting he is restricted and the whispers of Shaytan are restricted, and desires and anger are broken. [Righteous and Virtuous Deeds, trans: Hikmah Pubs, p. 147]