Board Thread:Boruto Discussions/@comment-30323490-20190223093406/@comment-25122992-20190223154858

It's not precicely an assistance, but something like "lend me some chakra for the jutsu pls". Even Kurama lended his chakra in this fashion for the Multi Shadow Clones, although we know that Naruto could use Kurama's chakra freely at that point.