Worry is correct becuase the poet's means is, when someone stealing, he/she would be worry to arrest by police!
پاسبان = police
وانگه ز زبان = its mean you did a bad work ! And you worry about what people say about you...
(زبان) = its point to conversations among people about you (gossip), its not means real tongue wich we have in our mouth !!! ;)