With Kūṭadanta 4.12

4.12

“kūṭadanto, bho, brāhmaṇo evamāha:

Then Kūṭadanta thought: ‘I have heard that the Samaṇa Gotama understands about the successful performance of a sacrifice with its threefold method and its sixteen accessory instruments. Now I don’t know all this, and yet I want to carry out a sacrifice. It would be well for me to go to the Samaṇa Gotama, and ask him about it.’
So he sent his doorkeeper to the Brahmans and householders of Khānumata, to ask them to wait till he could go with them to call upon the Blessed One.