Dharmaguptaka-vinaya 16.68

16.68

爾時諸比丘，欲為諸病比丘煮粥、若羹飯，若在溫室、若在厨屋、若在浴室中、若熏鉢、若染衣、若然燈、若燒香，諸比丘皆畏慎不敢作。佛言：「如是事聽作。自今已去當如是說戒：若比丘無病，自為炙故在露地然火、若教人然，除時因緣，波逸提。」

At that time, when the bhikṣus wished to cook gruel, soup, or rice for sick bhikṣus, or when they were in a sweat-house, kitchen, or bathhouse, or when fumigating alms-bowls, dyeing robes, lighting lamps, or burning incense, the bhikṣus were all fearful and cautious, not daring to do so. The Buddha said, "Such things are permitted to be done. From now on, the precept should be recited thus: 'If a bhikṣu who is not sick, for the sake of warming himself, kindles a fire in the open air or tells someone to kindle it, except on the proper occasion, it is a pāyattika.'"