
“Hold their noses to the grindstone.”
Blurt, Master-Constable (c.1601), Act iii. Sc. 3. Attributed to Middleton, but possibly written or edited by Thomas Dekker. http://www.tech.org/~cleary/blurt.html#NOTES. Compare: "Hold their noses to grinstone", John Heywood, Proverbes. Part i. Chap. v.