Part 3 / Act 3 — ACT III.
Reading edition
Scene 1. Page 329.
Ant. ... for mine eyes, Seeing those beads of sorrow stand in thine, Began to water.
We have a similar expression in The tempest, Act V. Scene 1, where Prospero says,
"Holy Gonzalo, honourable man, Mine eyes even sociable to the shew of thine, Fall fellowly drops."