How sound is the tradition attributed to Omar ibn al-Khattab in his saying: "Do not speak of what does not concern you, shun your enemy, and beware of your friend except the trustworthy, and none is trustworthy except one who fears Allah"?

This narration has been attributed to Umar ibn Al-Khattab, may Allah be pleased with him, through various chains of transmission and wordings. Among them is what Ibn Abi Shaybah narrated from Wadee'ah Al-Ansari that Umar said: "Do not interfere in what does not concern you, keep away from your enemy, and beware of your friend except for the trustworthy among people, and none is trustworthy except he who fears Allah. Do not accompany an immoral person lest you learn from his immorality, and do not disclose your secret to him. And consult in your affairs those who fear Allah." Dr. Abdulsalam bin Muhsin Aal Eisa collected its various chains of transmission in his thesis and mentioned that, by virtue of all its chains combined, the narration rises to the level of Hasan li-ghayrihi (good due to external corroboration).