Question: 

Respected Mufti ,I would like to enquire if there is any narration established showing that some sought of khutba/bayaan (like how we have English bayaan in today's times )took place before the main khutba of jumuaah and if there is how strong is the riwayat ,and if there is , would that عمل be regarded as sunnat or nafl, if it is sunnat will we regard it as sunnat zawaaid or sunnat هدي ،

I've heard an aalim say that ibn Abbas ( رضي الله عنه) would give some advice before the main khutba on the day of jumuuah.