On Cold In The Head

‘Ali b. al-Husayn al-Hannat narrated from ‘Ali b. Yaqtin that he said: I wrote to Abu al-Hasan, Al-Ridha’, peace be upon him, “I suffer from severe cold in my head so that when the wind blows I almost faint.” He wrote to me: “You must inhale ambergris and jasmine (al-zanbaq) after eating. You will be cured of it, Allah, the Sublime and Majestic, willing.”