[10] Then the Blessed One, on account of that occasion, in that connection, having given a talk on the Dhamma, addressed the bhikkhus: "Bhikkhus, I allow a bhikkhu whose feet are painful, or whose feet are cracked, or who has an affliction of corns on the feet, to wear sandals."
Now at that time bhikkhus climbed onto beds and onto benches with unwashed feet; both the robes and the lodgings were soiled. They reported this matter to the Blessed One. "Bhikkhus, I allow one to wear sandals with the thought, 'Now I shall climb onto a bed or a bench.'"
Now at that time bhikkhus, going at night to the Uposatha hall and to the assembly, stepped in the darkness on stumps and on thorns; their feet became painful. They reported this matter to the Blessed One. "Bhikkhus, I allow, within the monastery grounds, the wearing of sandals, and a torch, a lamp, and a walking staff."
Now at that time the group-of-six bhikkhus, having risen in the last watch of the night, put on wooden clogs and walked back and forth in the open air, making a loud noise, a great noise, a clattering noise, engaging in various kinds of pointless talk (tiracchānakathā) — that is to say: talk of kings, talk of robbers, talk of great ministers, talk of armies, talk of dangers, talk of battles, talk of food, talk of drink, talk of clothing, talk of beds, talk of garlands, talk of scents, talk of relatives, talk of vehicles, talk of villages, talk of towns, talk of cities, talk of countries, talk of women, talk of men, talk of heroes, talk of streets, talk of wells, talk of the departed, miscellaneous talk, speculation about the world, speculation about the sea, talk of existence thus in this way and that — and, treading on insects, they killed them, and they caused bhikkhus to fall away from concentration (samādhi). Those bhikkhus who were of few wishes … criticized, deplored, and complained: "How can the group-of-six bhikkhus, having risen in the last watch of the night, put on wooden clogs and walk back and forth in the open air, making a loud noise, a great noise, a clattering noise, engaging in various kinds of pointless talk — that is to say: talk of kings, talk of robbers … talk of existence thus in this way and that — and, treading on insects, kill them, and cause bhikkhus to fall away from concentration?"
Then those bhikkhus reported this matter to the Blessed One. "Is it true, bhikkhus, as is said, that the group-of-six bhikkhus, having risen in the last watch of the night, put on wooden clogs and walk back and forth in the open air, making a loud noise, a great noise, a clattering noise, engaging in various kinds of pointless talk — that is to say: talk of kings, talk of robbers … talk of existence thus in this way and that — and, treading on insects, kill them, and cause bhikkhus to fall away from concentration?" "It is true, Blessed One." … Having rebuked them and given a talk on the Dhamma, he addressed the bhikkhus: "Bhikkhus, wooden clogs are not to be worn. Whoever should wear them commits an offense of wrongdoing (dukkaṭa)."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.