Proverbs 6:13
He winketh with his eyes, he speaketh with his feet, he teacheth with his fingers;
Cross-reference
Proverbs 10:10
Parallel
Proverbs 10:10 directly states that winking the eye causes trouble, confirming the harmful intent behind the gesture here.
Psalm 35:19
Parallel
Psalm 35:19 mentions enemies winking the eye in hatred—identical to the malicious signaling described here.