أقرؤنا أبي، وأقضانا علي.
The most learned is Ubayy and the most capable in judgement is ‘Ali.
Imam al Bukhari (and others) narrates from Ibn ‘Abbas radiya Llahu ‘anhuma who said, “‘Umar radiya Llahu ‘anhu said…”
This hadith has other shawahid narrations from Anas, Ibn ‘Umar, Abu Mihjan, Abu Sa’id al Khudri, ‘Abdul Rahman ibn Abi Bakr al Siddiq radiya Llahu ‘anhum. We are not going to unnecessarily prolong (this discussion) by studying and tracing all of these different chains. All of them are (mentioned) by Ibn ‘Asakir.
 Imam al Bukhari: Sahih al Bukhari, Hadith: 4481.
 Shawahid (witness narrations) are those ahadith that are narrated from a totally different chains of transmission (with a different Sahabi) but containing the same meaning as the hadith in question and thus bolstering its reliability. [translator’s note]