Hawzah News Agency – Imam al-Sadiq (AS) when asked about humbleness said,

هُو أن تَرضى‏ مِن المَجلِسِ بدُونِ شَرَفِكَ، وأن تُسَلِّمَ على‏ مَن لَقِيتَ، وأن تَترُكَ المِراءَ وإن كُنتَ مُحِقّاً.

' Humbleness is that you be content to sit in a meeting where it is below your position, greet whosoever you meet and give up dispute even if you are right.'

Source: Bihar al-Anwar, v. 78, p,277 no. 113