Unknowing or Unwilling?

I just made someone an unknowing partner in my little deed. In my mind he was an unwilling partner, so I just did not even ask, as I always have done in the past when a thing must be done like in "17 Miracles" there is a line, "there are no more supplies, George, but you still must complete, whatever means are yours." So, I contemplated various means, and not likely the best, but an obvious one occurred to me and it must be done, but as I lay here considering my unwilling partner I actually do not know that he would be unwilling but I know that he is unknowingly helping me accomplish the thing. I wonder if similarly Laban sort of unknowingly aided Nephi in getting drunk. The reason I think this is that I wonder if a person recieves blessings from doing a thing if they are helping unknowingly. There is a scripture that comes to mind let not your left hand know what your right hand doeth. or something... The Lord seeth thy acts in private will reward thee openly... I wonder if I deny others the blessing of a good deed they might have agreed to if asked, but I simply cannot risk it. It is too important.