Saṁyutta Nikāya:
III. Khandhā Vagga:
29: Nāga Saṁyutta
Kindred Sayings on Nāgas
Suttas 1-10
Sutta 1
Suddhika Suttaṁ
According to Scheme1
Thus have I heard:
The Exalted One was once staying near Sāvatthī
at the Jeta Grove in Anāthapiṇḍika's Park.
And there the Exalted One addressed the brethren, saying:
"Brethren!"
"Master!" responded those brethren.
The Exalted One said:
"There are these four sorts of birth, brethren,
as nāgas.
What four?
The egg-born,
the womb-born2
the sweat-born,3
those born without parents.
These, brethren, are the four sorts of birth as nāgas.
1 Suddhikaṅ. On this term see B Psy Eth., 2nd ed. only, § 505, n. 1. In the next section the text reads suddhakaṅ. Asking why the Master chose such a subject as nāga-births (i.e., among the gnomes and elves) for his discourse, Comy. says it was to explain the desire (ukkcaṇṭhat'atthaṅ) for such births.
2 Jalabujā, 'water-born.' Comy. says vatthikose jātā.
3 Sanseda-jā. They are exuded from the pores; the last class, opapātikā, 'just come to be.' Cf. Comy. on D. iii, 107, in Dialogues, iii, 103, n. 2; and Comy. on Puggala-Paññatti, J.P.T.S. 1913, p. 197.