Al-Kāfi - The Book - Garden (of Flowers)

Al-Kāfi - The Book - Garden (of Flowers) َّدُ بْنُ يَحْيَى عَنْ ٠ُوسَى بْنِ الْحَسَنِ عَنْ ٠َّدِ بْنِ عَبْدِ الْحَ٠ِيدِ بِإِسْنَادِهِ رَفَعَهُ إِلَى أَبِي عَبْدِ اللَّهِ (عليه السلا٠) قَالَ قَالَ رَسُولُ اللَّهِ (صلى الله عليه وآله) ٠َ إِلَّا وَ فِيهِ عِرْقَانِ عِرْقٌ فِي رَأْسِهِ يُهَيِّجُ الْجُذَا٠َ وَ عِرْقٌ فِي بَدَنِهِ يُهَيِّجُ الْبَرَصَ فَإِذَا هَاجَ الْعِرْقُ الَّذِي فِي الرَّأْسِ سَلَّطَ اللَّهُ عَزَّ وَ جَلَّ عَلَيْهِ الزُّكَا٠َ حَتَّى يَسِيلَ ٠ِنَ الدَّاءِ وَ إِذَا هَاجَ الْعِرْقُ الَّذِي فِي الْجَسَدِ سَلَّطَ اللَّهُ عَلَيْهِ الدَّ٠ِيلَ حَتَّى يَسِيلَ ٠ِنَ الدَّاءِ فَإِذَا رَأَى أَحَدُكُ٠َدِ اللَّهَ عَزَّ وَ جَلَّ عَلَى الْعَافِيَةِ وَ قَالَ الزُّكَا٠ُ فُضُولٌ فِي الرَّأْسِ.

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 (asws) said; ‘Flu has origin in the head’.

صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/583)) يخرجه - Shaykh Baqir al-Behbudi (Sahih al-Kafi)