Shoyoroku - Case 4: The World-Honored One Points to the Ground

When the World-Honored One was walking with his assembly, he pointed to the
ground with his hand and said,
  "This place is good for building a temple."
Indra [1] took a stalk of grass and stuck it in the ground and said,
  "The temple has been built."
The World-Honored One smiled.

[1]: Exactly: Sakra Devendra. The lord god of the Trayastrimasa Heaven.