It is narrated from Sayyiduna Muawiyah (may Allah be pleased with him) that avoid narrating many ahadith from the Prophet (peace and blessings of Allah be upon him) except for those ahadith which were commonly known during the time of Sayyiduna Umar (may Allah be pleased with him), because Sayyiduna Umar (may Allah be pleased with him) used to warn people regarding matters of Allah. I heard the Prophet (peace and blessings of Allah be upon him) say: When Allah intends good for a servant, He grants him understanding of the religion.