Do not argue with people

لا تُمارِ فَيَذْهَبَ بَهاؤُكَ وَ لا تُمازِحْ فَيُجْتَرَأَ عَلَيْكَ.

Imam Hassan Askari (AS): Do not argue with people because your value will be lost and do not joke with them either because they will be bold with you.