The Discourse about the Great Emancipation

The Fifth Chapter for Recitation
venerable Ānanda: “Enough, Ānanda, do not obstruct Subhadda allow
Subhadda to see the Realised One. 163 Whatever Subhadda will ask of
me all of it he will ask of me seeking for deep knowledge, and not to
trouble me. Whatever question is put I will answer, and he will quickly
understand it.”
Then venerable Ānanda said this to the wanderer Subhadda: “Go,
friend Subhadda, the Gracious One has given you permission.”
Then the wanderer Subhadda approached the Gracious One, and after
approaching, he exchanged greetings with the Gracious One, and after
exchanging courteous talk and greetings, he sat down on one side.
While sitting on one side the wanderer Subhadda said this to the
Gracious One: “Those ascetics and brahmins, dear Gotama, who have a
community, a group, who teach a group, well-known, famous, religious
founders, agreed upon as good for the people, such as: Pūraṇa Kassapa,
Makkhali Gosāla, Ajita Kesakambala, Pakudha Kaccāyana, Sañjaya
Belaṭṭhaputta, Nigaṇṭha Nāṭaputta, 164 have they all understood,
according to their own avowal? Have they all not understood? Or,
have some understood? Or, have some not understood?”
163 It is curious that the Buddha has to intervene here as he has just been
praising Ānanda for knowing the right time for letting people see him!
164 These are six famous teachers of Lord Buddha's time. The Nigaṇṭha
Nāṭaputta at least had died some time before this.
165