Possessions which can have a lien on them are acquired with money, with a document, or with an act of possession, and [those] which cannot have a lien on them are acquired only with meshichah.  Possessions which cannot have a lien on them are acquired together with possessions which can have a lien on them with money, with a document, or with an act of possession; and possessions which cannot have a lien on them cause [one] to swear concerning possessions which can have a lien on them.