With Ambaṭṭha 2.10.14

2.10.14

Yassa kho pana, ambaṭṭha, mayi kaṅkhā vā vimati vā so maṃ pañhena, ahaṃ veyyākaraṇena sodhissāmī”ti.

Whoever has any doubt or uncertainty about me, let them ask me and I will clear up their doubts with my answer.”