"Things like political information about your home, then, if we can't tempt you to stay, in case we're later able to make official contact."
He's assuming the man's pouches contain storage scrolls or the equivalent.
"Trade goods are likely to suffice, and we would want to check your healing, but there might be some willing to try it." Despite Hashirama's best efforts, their own healing is far behind 'anything except age.' "We don't demand much from visitors, and usually the favors in question are diplomatic in nature, but it sounds like none of you occupy an official position."