Reporting lines

  Amidst some recent discussions relating to the traditions upon Ṭā’un (plague, contagion), there is one that raises a niche question regarding the isnād – or channel of transmission.  Out of the six commonly known books of ḥadith, only Ibn Mājah cites this in his collection of Sunan, with ‘Aṭā ibn Abi Rabāḥ narrating upon the authority of Abdullah ibn Umar: حدثنا محمود بن خالد الدمشقي حدثنا سليمان بن عبد