Grocott & Ward, comps. Grocott’s Familiar Quotations, 6th ed. 189-?.

Butter

’Twas her brother that in pure kindness to his horse butter’d his hay.
Shakespeare.—King Lear, Act II. Scene 4. (The Fool to Lear.)

But now I fear it will be said,
No butter sticks upon his bread.
Swift.—Pastoral Dialogue.