Most prominently by the Bible itself.
40 Then they took the body of Jesus, and bound it in strips of linen with the spices, as the custom of the Jews is to bury.
6 Then Simon Peter came along behind him and went straight into the tomb. He saw the strips of linen lying there, 7 as well as the cloth that had been wrapped around Jesus’ head. The cloth was still lying in its place, separate from the linen.
Strips of linen, not a whole shroud, plus a separate head cloth.