(Devarim 24:10) "When your neighbor is indebted to you, any kind of debt, do not enter his house to claim his pledge." "When your neighbor is indebted to you": This tells me only of a loan. Whence do I derive (the same for) a laborer's wages and store-credit? From "any kind of debt."
"do not enter his house": I might think that he could not take a pledge from inside (his house), but that he may do so from (the debtor's possessions) outside; it is, therefore, written (Ibid. 11) "and the man who is indebted to you shall bring out to you the pledge outside. I might think that he could enter inside (and wait for the debtor to give him the pledge); it is, therefore, written "Outside shall you stand."
"Outside shall you stand and the man" includes the messenger of beth-din.