John Lightfoot on Matthew 10:9

[In your purses, &c.] these things, which are forbidden the disciples by our Saviour, were the ordinary provision of travellers; to which the more religious added also the book of the law.

"Some Levites travelled to Zoar, the city of palm-trees: and when one of them fell sick by the way, they brought him to an inn. Coming back, they inquired of the hostess concerning their companion. 'He is dead,' said she, 'and I have buried him.'" And a little after, she brought forth to them his staff, and his purse, and the book of the law, which was in his hand. So the Babylonian Misna: but the Jerusalem adds also shoes: and instead of that which in the Misna is his purse, in the Gemara is...an inner garment, with pockets to hold money and necessaries.

That also is worthy mention; Let no man enter into the mount of the Temple with his staff, nor with his shoes, nor with his purse, nor with dust on his feet. Which words are thus rendered by the Gemara: "Let no man enter into the mount of the Temple, neither with his staff in his hand, nor with his shoes upon his feet, nor with money bound up in his linen, nor with a purse hanging on his back." Where the Gloss thus: 'Ponditho' is a hollow girdle [or a hollow belt], in which they put up their money. See the Aruch in Aponda, and Ponda.