H.G.Srutakirti Prabhu in a recent SB class, in Vrindavana, narrates pastimes with Srila Prabhupada (video)
Once some of his disciples were talking lightly about the faults of their godbrothers in a room next to that of his Divine Grace without being aware that he was listening. After a while, Srila Prabhupada appeared and told them: “This kind of gossip destroys your Krishna consciousness!”
Srila Prabhupada was never pleased to hear criticisms and negative talk.
During a morning walk, some other disciples were complaining about similar issues, Srila Prabhupada stopped, turn towards them and said: “You have come only to discourage and I have come to encourage!”
Watch it here: https://goo.gl/XnrffU