BT Ket 21a(16) :דלא צריך איהו לאסהודיה אחתימות ידיה‏ : he does not need to make him testify about his signature
See the entire entry for ḥtymw n.f. signature

BT Ket 21a(16) :דלא צריך איהו לאסהודיה אחתימות ידיה‏ : that he is not required to bear witness to his signature
See the entire entry for shd vb. to testify