4-32 Ahmad ibn Zyad ibn Ja’far al-Hamedany - may God be pleased with him - narrated that Ali ibn Ibrahim ibn Hashim quoted his father, on the authority of Muhammad ibn Abi Umayr, on the authority of Qiyath ibn Ibrahim,on the authority of Ja’far ibn Muhammad as-Sadiq (MGB), on the authority of his father (MGB), on the authority of his forefathers (MGB), on the authority of Ali (MGB) that God’s Prophet (MGB) said,

“Do not consider the following four things to be bad since they have four benefits. Do not consider influenza to be bad since it brings security from vitiligo . Do not consider imposthume to be bad since it brings security from leprosy. Do not consider eye pain to be bad since it brings security from going blind. Do not consider coughing to be bad since it makes you secure from hemiplegia. ”