The meaning of the evil of the jealous when he emits jealousy

1. My father, may Allah grant him mercy, said: We were told by Ahmad bin Idrees, from Muhammed bin Ahmad, from Ya’qoub bin Yazid, from Ibn Abi ‘Umayr, that he ascribed it (to an Infallible, who said) with regards to the saying of Allah, Exalted and Glorious is He: «And from the evil of the jealous when he emits jealousy.» (113:5) He said