1Thus have I heard. On one occasion the Blessed One was dwelling among the Sakyans where there was a town of the Sakyans named Khomadussa. [n.482] The name Khomadussa means "linen cloth." Spk says that the town was given this name because of the prevalence of linen there. From what follows it seems the town was a brahmin enclave in the predominantly khattiya Sakyan republic. In the irate reaction of the brahmins to the Buddha’s arrival on the scene we can detect a note of hostility rooted in caste prejudice. Then the Blessed One dressed and, taking bowl and robe, entered Khomadussa for alms.

Now on that occasion the brahmin householders of Khomadussa had assembled in council on some business matter while it was drizzling. Then the Blessed One approached the council. The brahmin householders of Khomadussa saw the Blessed One coming in the distance and said: "Who are these shaveling ascetics? Don’t they know the rule of order?" [n.483] My rendering is not strictly literal but is intended to convey the sense of indignation. Spk: The "rule of order" (sabhadhammaṁ, lit. "rule of the council") was that late-comers should enter through a side entrance so as not to disturb those comfortably settled in their seats. But the Buddha entered from the front, so the brahmins spoke scornfully. The Buddha picks up on the the word dhamma, in the sense of rule, and speaks with reference to the true doctrine. There is also a pun on sabha as council (or meeting hall) and santo as the good ones. According to Spk, the Buddha had caused the rain to fall by an act of will to give himself a reason for entering the meeting hall. A clearer example of rain created by psychic power is at SN41.4.

Then the Blessed One addressed the brahmin householders of Khomadussa in verse:

3When this was said, the brahmin householders of Khomadussa said to the Blessed One: "Magnificent, Master Gotama! Magnificent, Master Gotama! The Dhamma has been made clear in many ways by Master Gotama, as though he were turning upright what had been turned upside down, revealing what was hidden, showing the way to one who was lost, or holding up a lamp in the dark for those with eyesight to see forms. We go for refuge to Master Gotama, and to the Dhamma, and to the Bhikkhu Saṅgha. Let Master Gotama remember us as lay followers who from today have gone for refuge for life."

sn.i.185

1Evaṁ me sutaṁ—​ ekaṁ samayaṁ bhagavā sakkesu vihārati khomadussaṁ nāmaṁ sakyānaṁ nigamo. Atha kho bhagavā pubbaṇhasamayaṁ nivāsetvā pattacīvaramādāya khomadussaṁ nigamaṁ piṇḍāya pāvisi.

Tena kho pana samayena khomadussakā brāhmaṇagahapatikā sabhāyaṁ sannipatitā honti kenacideva karaṇīyena, devo ca ekamekaṁ phusāyati. Atha kho bhagavā yena sā sabhā tenupasaṅkami. Addasaṁsu khomadussakā brāhmaṇagahapatikā bhagavantaṁ dūratova āgacchantaṁ. Disvāna etadavocuṁ: "ke ca muṇḍakā samaṇakā, ke ca sabhādhammaṁ jānissantī"ti?

Atha kho bhagavā khomadussake brāhmaṇagahapatike gāthāya ajjhabhāsi:

3Evaṁ vutte, khomadussakā brāhmaṇagahapatikā bhagavantaṁ etadavocuṁ: "Abhikkantaṁ, bho gotama, abhikkantaṁ, bho gotama. Seyyathāpi, bho gotama, nikkujjitaṁ vā ukkujjeyya, paṭicchannaṁ vā vivareyya, mūḷhassa vā maggaṁ ācikkheyya, andhakāre vā telapajjotaṁ dhāreyya: ‘cakkhumanto rūpāni dakkhantī’ti; evamevaṁ bhotā gotamena anekapariyāyena dhammo pakāsito. Ete mayaṁ bhavantaṁ gotamaṁ saraṇaṁ gacchāma dhammañca bhikkhusaṅghañca. Upāsake no bhavaṁ gotamo dhāretu ajjatagge pāṇupete saraṇaṁ gate"ti.

Upāsakavaggo dutiyo.

Brāhmaṇasaṁyuttaṁ samattaṁ.