Digha Nikaya 1:1304
SUJATOAcirūpasampanno kho panāyasmā subhaddo eko vūpakaṭṭho appamatto ātāpī pahitatto viharanto nacirasseva—yassatthāya kulaputtā sammadeva agārasmā anagāriyaṁ pabbajanti—tadanuttaraṁ brahmacariyapariyosānaṁ diṭṭheva dhamme sayaṁ abhiññā sacchikatvā upasampajja vihāsi.
Not long after his ordination, Venerable Subhadda, living alone, withdrawn, diligent, keen, and resolute, soon realized the supreme end of the spiritual path in this very life. He lived having achieved with his own insight the goal for which gentlemen rightly go forth from the lay life to homelessness.