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Shaikh Abu ‘Amr al-Dimashiqi (Allah have mercy on him) said, when he was asked: ‘Who is the weakest of all human beings?’

“The one who is incapable of managing his nafs.“

‘And who is the most powerful of all human beings?’

“The one who is capable of mastering his passions (desires of nafs).”

Jawami ‘Adab al-Sufiyya, page 37