It was narrated that Abu Laila Al-Kindi said:
"Khabbab came to `Umar and said: 'Come close, for no one deserves this meeting more than you, except `Ammar.' Then Khabbab started to show him the marks on his back where the…
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الْوَهَّابِ بْنُ عَبْدِ الْمَجِيدِ، حَدَّثَنَا خَالِدٌ الْحَذَّاءُ، عَنْ أَبِي قِلاَبَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ " أَرْحَمُ أُمَّتِي بِأُمَّتِي أَبُو بَكْرٍ وَأَشَدُّهُمْ فِي دِينِ اللَّهِ عُمَرُ وَأَصْدَقُهُمْ حَيَاءً عُثْمَانُ وَأَقْضَاهُمْ عَلِ…
It was narrated from Anas bin Malik that:
The Messenger of Allah (ﷺ) said: The most merciful of my Ummah towards my Ummah is Abu Bakr; the one who adheres most sternly to the religion of Allah is 'Umar; the most sincere…
حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ أَبِي قِلاَبَةَ مثله عند إبن قدامة. غير أنه يقول في حق زيد (وَأَعْلَمُهُمْ بِالْفَرَائِضِ).
Another chain with similar wording (as no. 154) but he said that:
Zaid was: "The most knowledgeable of them concerning the rules of inheritance."