What was Thorin's message to the dwarves?

From the text:

So it was that Bilbo was able to take secretly Thorin's message to each of the other imprisoned dwarves, telling them that Thorin their chief was also in prison close at hand, and that no one was to reveal their errand to the long, not yet, not before Thorin gave the word. For Thorin had taken heart again hearing how the hobbit had rescued his companions from the spiders, and was determined once more not to ransom himself with promises to the king of a share in the treasure, until all hope of escaping in any other way had disappeared; until in fact the remarkable Mr. Invisible Baggins (of whom he began to have a very high opinion indeed) had altogether failed to think of something clever.