PTSan 21.c:3[2] :כד הוה ידע זכו לבר נש בדינא ולא הוה ידע ליה הוה פתח ליה‏ : when he would see a person's merit in a case that (the person) did not know himself, he would make an initial suggestion
See the entire entry for ptḥ vb. to open