When one of you eats, then he mentioned the hadith.
حدثنا إبراهيم بن خالد حدثنا رباح عن معمر عن الزهري
إذا أكل أحدكم فذكر الحديث
No references are available.
This is mursal, but it does not undermine the sahih, connected narrations. Rather, it is to be understood as connected, meaning that Salim narrated it from his father, Ibn Umar, and the narrator may sometimes drop part of the chain for brevity. This hadith is a repetition of the one before it.