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 khambhakatā antaraghare gacchanti …pe….At that time the monks from the group of six put their hands on their hips while walking in inhabited areas. …

“Na khambhakato antaraghare gamissāmīti sikkhā karaṇīyā”ti.
gamissāmīti → gamissāmīti nisīdissāmīti (pts)“‘I will not put my hands on my hips while walking in inhabited areas,’ this is how you should train.”

Na khambhakatena antaraghare gantabbaṁ.One should not put one’s hands on one’s hips while walking in an inhabited area. Yo anādariyaṁ paṭicca ekato vā ubhato vā khambhaṁ katvā antaraghare gacchati, āpatti dukkaṭassa.If a monk, out of disrespect, puts one or both hands on his hips while walking in an inhabited area, he commits an offense of wrong conduct.

Anāpatti—There is no offense: asañcicca …pe…if it is unintentional; ādikammikassāti.if he is the first offender.

Paṭhamasikkhāpadaṁ niṭṭhitaṁ.The first training rule is finished.