Authors:

Never talk about the faults of others, no matter how bad they may be. Nothing is ever gained by that. You never help one by talking about his fault; you do him an injury, and injure yourself as well.

Swami Vivekananda (2016). “Vivekananda Reader”, p.193, Advaita Ashrama (A publication branch of Ramakrishna Math, Belur Math)
Never talk about the faults of others, no matter how bad they may be. Nothing is ever gained by that. You never help one by talking about his fault; you do him an injury, and injure yourself as well.