Prison Act Article 47

The food, clothing, and necessary items for children of inmates brought into prison or born in prison must be prepared by inmates; where an inmate is unable to provide such necessities, they may be prepared by the prison.
中文原文 監獄行刑法第47條
攜帶入監或在監生產之受刑人子女,其食物、衣類及必需用品,均應由受刑人自備;無力自備者,得由監獄提供之。

English translation for reference only; the Chinese text prevails. Not legal advice.