BT Yom 27a(2) :אשכחתיה לאביי דיתיב וקא מסבר ליה לבריה‏ : I found PN who was sitting and explaining to his son
See the entire entry for ytb vb. to sit ; to dwell; to stay, remain

BT Yom 27a(2) :אשכחתיה לאביי דיתיב וקא מסבר ליה לבריה‏ : I found PN who was sitting and explaining to his son
See the entire entry for sbr vb. to expect; to reason