4. Ahmad ibn ‘Abd Allah has narrated from Ahmad ibn Muhammad from his father from Ibn Abi ‘Umayr from abu al-Jahm from Fudayl al-A’war who has said the following: “I was present when Mu‘adh ibn Kathir said to abu ‘Abd Allah , ‘I have become affluent so I want to quit business.’ He (the Imam) said, ‘If you do so your power of reason will decrease’- or similar expression.”