Tena samayena buddho bhagavā sāvatthiyaṁ viharati jetavane anāthapiṇḍikassa ārāme.At one time the Buddha was staying at Sāvatthī in the Jeta Grove, Anāthapiṇḍika’s Monastery. Tena kho pana samayena chabbaggiyā bhikkhū sīsappacālakaṁ antaraghare nisīdanti sīsaṁ olambentā …pe….At that time the monks from the group of six were swaying and tilting their heads while sitting in inhabited areas. …

“Na sīsappacālakaṁ antaraghare nisīdissāmīti sikkhā karaṇīyā”ti.
antaraghare → antaraghare gamissāmīti (pts)“‘I will not sway my head while sitting in inhabited areas,’ this is how you should train.”

Na sīsappacālakaṁ antaraghare nisīditabbaṁ.One should not sway one’s head while sitting in an inhabited area; Sīsaṁ paggahetvā nisīditabbaṁ.one should sit keeping one’s head straight. Yo anādariyaṁ paṭicca sīsappacālakaṁ antaraghare nisīdati sīsaṁ olambento, āpatti dukkaṭassa.If a monk, out of disrespect, sways and tilts his head while sitting in an inhabited area, he commits an offense of wrong conduct.

Anāpatti—There is no offense: asañcicca,if it is unintentional; assatiyā,if he is not mindful; ajānantassa,if he does not know; gilānassa,if he is sick; vāsūpagatassa,
vāsūpagatassa → vāsupagatassa (sya-all)if he has entered his dwelling; āpadāsu,if there is an emergency; ummattakassa,if he is insane; ādikammikassāti.if he is the first offender.

Dasamasikkhāpadaṁ niṭṭhitaṁ.The tenth training rule is finished.

Ujjagghikavaggo dutiyo.The second subchapter on laughing loudly is finished.