Shundo David Haye – Zen Priest

Dizang saw a monastic coming and held up a whisk.
The monastic bowed.
Dizang said, “What did you see that made you bow?”
The monastic said, “I thanked you for your instruction.”
Dizang hit the monastic and said, “You saw me hold up the whisk and thanked me. Why don’t you thank me when you see me sweep the ground every day?” (Shinji Shobogenzo)

One for those who think the teaching has to have a particular form.