This is towards the end of the movie. The timing is when Teabing realizes that he couldn't solve the coding on the puzzle (where you make a certain word and it opens, but if you try to force it to open, it spills acid on the thin paper contained inside). Teabing rolls the puzzle to Robert Langdon (Tom Hanks). What people seem to miss is that Teabing is crippled, and so his legs are very weak. He couldn't possibly bend down and gently roll the fragile puzzle to Langdon. The scene does cut right before he rolls the puzzle, but I think there could have been other better possibilities for Teabing to give the puzzle to Langdon. It would have been funny if he tossed it and it broke. =P