Al-Karajki (r.a.) narrates in Kanz al-Fawaid that Abu Hanifa was eating alongside Imam Sadiq (a.s.).
When he (a.s.) finished eating he (a.s.) expressed gratitude (by saying) “All Praise is for Allah, the Lord of the Worlds. O Allah! Surely this (food) was from you and from your Messenger (s.a.w.a.)”.
Abu Hanifa remarked, “O Aba Abdillah! Are you associating a partner with Allah?”
Imam (a.s.) rebuked him, “Woe be to you! Surely Allah, the Almighty says in His Book –
‘And they did not find fault except because Allah and His Apostle enriched them out of His Grace’
(Surah Taubah (9): Verse 74)
He mentions at another place,
‘And if they were content with what Allah and His Apostle gave them, and had said: Allah is sufficient for us; Allah will soon give us (more) out of His Grace and His Apostle too’ (Surah Taubah (9): Verse 59)”.
Abu Hanifa admitted, “By Allah! It is as if I have never read both these verses in the book of Allah nor heard it except now.”
Imam Sadiq (a.s.) replied – “Indeed you have read and heard these two verses earlier but Allah, the Almighty, has revealed about you and people like you –
‘Nay, on their hearts there are locks.’ (Surah Muhammad (47): Verse 24) and also said ‘Nay! Rather, what they used to do has caused their hearts to rust.’ (Surah Mutaffifeen (83): Verse 14)
• Behar al-Anwar, vol. 47, p. 240, H. 25