"...and had a wave for her winding-sheet" —

The ghost [of his mother] comes on, softly, after the Conjuration; and Almanzor retires to the middle of the Stage.
Ghost. I am the ghost of her who gave thee birth:
The Airy shadow of her mouldring Earth.
Love of thy Father me through Seas did guide;
On Sea's I bore thee, and on Sea's I dy'd.
I dy'd; and for my Winding-sheet, a Wave
I had; and all the Ocean for my Grave.

John Dryden, The Conquest of Granada. Part. I.,
Act. iv. p. 130. Ed. 1672. (Vgl. Arber, p. 94.)