Hadith 14:6
Abu Bakr narrated to us, he said: Waki’ narrated to us, from Sufyan, from ‘Ata’ ibn al-Sa’ib, from Abu ‘Abd al-Rahman, he said: ‘Abdullah said: Allah did not send down a disease, or He did not create a disease, except that He sent down with it a cure. He who is ignorant of it is ignorant of it, and he who knows it knows it.
حدثنا أبو بكر قال حدثنا وكيع عن سفيان عن عطاء بن السائب عن أبي عبد الرحمن قال قال عبد الله لم ينزل الله داء أو لم يخلق داء إلا وقد أنزل معه شفاء جهله من جهله وعلمه من علمه