With Ambaṭṭha 2.20.3

2.20.3

Atha kho bhagavā pubbaṇhasamayaṃ nivāsetvā pattacīvaramādāya saddhiṃ bhikkhusaṅghena yena brāhmaṇassa pokkharasātissa nivesanaṃ tenupasaṅkami; upasaṅkamitvā paññatte āsane nisīdi.

Then the Buddha robed up in the morning and, taking his bowl and robe, went to the home of Pokkharasāti together with the mendicant Saṅgha, where he sat down on the seat spread out.