Translation:

19. They said: "Your evil omens are with yourselves: (deem ye this an evil omen) if ye are admonished? Nay but ye are a people transgressing all bounds!"

Notes (Tafseer)

3964. 'What ye call omens arise from your own iii-deeds. Do you suppose that a man who comes to warn you and teach you the better way brings you ill-luck? Fie upon you!'

3965. To call Good evil and accuse of falsehood men of truth who come unselfishly to bring the message of the beneficent Mercy of Allah, is the very height of extravagance and transgression.