Board Thread:Wiki Discussions/@comment-3238846-20140422105553/@comment-3361615-20140427225352

Ten Tailed Fox wrote: Edit 2: If anything, the third databook confirms that a jinchuriki can master the elements needed to use Lava just by borrowing (which Naruto did) power from Son Goku. After a journey (which Naruto didn't, and why he still needs Son Goku to use Fire/Earth/Lava).