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