Hawzah News Agency – The commander of the faithful, Imam Ali peace be upon him says:

كَفاكَ أدباً لنفسِكَ اجتِنابُ ما تَكْرهُهُ مِن غيرِكَ.

'It suffices you in disciplining yourself to avoid all that you hold in contempt from others.'

Source: Bihar al-Anwar, v. 70, p. 73, no. 27