With Ambaṭṭha 2.5.4

2.5.4

‘ke ca muṇḍakā samaṇakā ibbhā kaṇhā bandhupādāpaccā, kā ca tevijjānaṃ brāhmaṇānaṃ sākacchā’ti attanā āpāyikopi aparipūramāno.

‘Who are these shavelings, fake ascetics, primitives, black spawn from the feet of our kinsman compared with conversation with the brahmins of the three knowledges?’ Yet he himself has not even fulfilled one of the quittings!