579. Muhammad Bin Yahya, from Muhas Bin Al-Hassan, from Muhammad Bin Abdul Hameed, by his unbroken chain going up to Abu Abdullah , the following: Abu Abdullah has said: ‘The Rasool Allah ﷺ said: ‘There is no one from the children of Adam except that there are two veins within him. A vein in his head which incites the leprosy, and a vein in his body which incites the vitiligo. So if the vein in the head gets incited, Allah (azwj) Mighty and Majestic Makes the flu to overcome it until the illness flows out from it. And if the vein which is in the body gets incited, Allah (azwj) Makes it to be overcome by the abscesses until the illness flows out from it. So if one of you sees the flu and abscesses, so he should Praise Allah (azwj) Mighty and Majestic for the health’. And he said; ‘Flu has origin in the head’.