With Ambaṭṭha 2.3.11

2.3.11

Puna caparaṃ, ambaṭṭha, idhekacco samaṇo vā brāhmaṇo vā imañceva anuttaraṃ vijjācaraṇasampadaṃ anabhisambhuṇamāno pavattaphalabhojanatañca anabhisambhuṇamāno kandamūlaphalabhojanatañca anabhisambhuṇamāno gāmasāmantaṃ vā nigamasāmantaṃ vā agyāgāraṃ karitvā aggiṃ paricaranto acchati.

Furthermore, take some ascetic or brahmin who, not managing to obtain this supreme knowledge and conduct, or to get by eating fallen fruit, or to get by eating tubers and fruit, sets up a fire chamber in the neighborhood of a village or town and dwells there serving the sacred flame.