Jabir b. ‘Umar al-Saksaki narrated from Muhammad b. ‘Isa from Ayyub b. Faddala from Muhammad b. Muslim, who said: Abu ‘Abd Allah, peace be upon him, said: “If people knew what there was in apples, they would treat their sick only with it. Surely it is the quickest thing to benefit the heart, particularly its exudation (al-nuduh).”
From Abu Basir, he said: I heard al-Baqir, peace be upon him, say: “When you wish to eat apples, sniff them and then eat them, for if you do that every illness and danger will be expelled from your body and everything caused by winds will subside.”
From: Islamic Medical Wisdom, The Tibb al-A’imma.