What can be weaker ?

“And man was created weak.”

(4):28

In regard to this verse, someone asked Imaam Sufyaan Ath-Thauree (rahimahullaah), ‘How is man weak?’ He said, “A woman walks by a man, and he cannot prevent himself from looking at her, although she does not benefit him at all. What can be weaker than that?“

The Biography of Sufyaan Ath-Thauree (rahimahullaah)