HORATIO.
In faith, my lord, not I.

MARCELLUS.
Nor I, my lord, in faith.

HAMLET.
Upon my sword.

MARCELLUS.
We have sworn, my lord, already.

HAMLET.
Indeed, upon my sword, indeed.

GHOST.
[Cries under the stage.] Swear.

HAMLET.
Ha, ha boy, sayst thou so? Art thou there, truepenny?
Come on, you hear this fellow in the cellarage.
Consent to swear.

HORATIO.
Propose the oath, my lord.

HAMLET.
Never to speak of this that you have seen.
Swear by my sword.

GHOST.
[Beneath.] Swear.