OTHELLO.
[…] while she kept it, 'Twould make her amiable and subdue my father
Entirely to her love; but if she lost it
Or made a gift of it, my father's eye
Should hold her loathed, and his spirits should hunt
After new fancies: she, dying, gave it me;
And bid me, when my fate would have me wive,
To give it her. I did so: and take heed on't;
Make it a darling like your precious eye;
To lose't or give't away were such perdition
As nothing else could match.
(III, 4, 58-68)