From the link I provided:
What is the easiest explanation here? The Lord Jesus allowed them to use one walking staff, just not bring along another (or special) one. In other words, they did not need to go out and buy another staff to prepare for their journeys (thus giving them two or more staves, which Jesus forbade). No, they just needed to bring along the one staff they already had. They did not need to pack a bag with money or extra clothes, either. Bringing along more supplies was unnecessary. The Messianic believers whose houses they would visit, those people would provide for their needs, for “the workman is worthy of his meat” (Matthew 10:10b).