Yuganaddha or Yuganandha Sutta
Ananda tells the monks at Ghositārāma,
in Kosambī, that those who have attained arahantship have done so in one of four
- by developing insight preceded by calm,
- or calm preceded by insight,
- or calm and insight together,
- or by having a mind utterly devoid of perplexities about the Dhamma.