Origin of 'The Fast of the Demons': Seeking the Source of Church Fathers Quote

Many moons ago, I was surfing through the ocean of Wikipedia and found the page for "[Great Lent](https://en.wikipedia.org/wiki/Great_Lent) ." While reading, I found [this quote](https://en.wikipedia.org/wiki/Great_Lent#:~:text=The%20Church%20Fathers%5Bwhich%3F%5D%20have%20referred%20to%20fasting%20without%20prayer%20as%20%22the%20fast%20of%20the%20demons%22%5Bcitation%20needed%5D%20since%20the%20demons%20do%20not%20eat%20according%20to%20their%20incorporeal%20nature%2C%20but%20neither%20do%20they%20pray.) : > "The Church Fathers have referred to fasting without prayer as "the fast of the demons" since the demons do not eat according to their incorporeal nature, but neither do they pray." I have absolutely fallen in love with this idea but have completely failed to find where it came from. I have a feeling it is hidden somewhere in the depths of the PG or PL and even the most advanced AIs can not find it. Does anyone happen to know where this quote has come from?