BT Šab 8a(16) :משלשה ועד תשעה ,, ולא כתופי מכתפי עלויה תשעה ודאי מכתפי עילויה‏ : between three and nine handbreadths (in height) (people) certainly do not carry it on their shoulders on it (a pillar); nine (and above) – they certainly carry it on their shoulders upon it
See the entire entry for ktp vb. D to carry on the shoulder