מדרש על בבא בתרא 160:2

The disciples of R. Nechunia b. Hakkana asked him: "Whereby have you merited to live so long?" He answered: "I never tried to elevate myself at the expense of my neighbors; I never went to bed with the curse of my neighbor, and I was liberal with money." "I never tried to elevate myself at my neighbor's expense," etc. As it happened with R. Huna, who carried a pickaxe. R. Ghana b. Hanailai took it away from him with the intention of carrying it. R. Huna said to him: 'If it is your custom to carry such a thing in your town, do so; but otherwise, if I will be honored by your disgrace, I do not want it.' " "I never went to bed," etc., as Mar Zutra, when going to bed used to say: "O Lord forgive every one that may have insulted me." "I was liberal with my money," as the master said that Job was liberal with his money; that is, he allowed the storekeepers larger profits than were necessary.