1 Kings 11:29

When Jeroboam went out of Jerusalem; upon some occasion, possibly to execute his charge. They two were alone in the field; having gone aside thither for some private conference; for otherwise it is most likely that he had servants attending upon him, who, though they heard not the words, yet might see the action, and the rending of Jeroboam's coat; and thus it came to Solomon's ears, who being so acute and wise, could easily understand the thing by what he heard of the action, especially when a prophet did it.