Then, of course, there’s the famous story with R’ Chaim Volozhiner (IIRC) collecting money for the yeshiva.
One year, he needed to hire a wagon and driver. One donor, who had given generously in the past, asked R’ Chaim how he knew that his money would support Torah and not pay for the horse’s food.
R’ Chaim answered him that just as for the building if the Mishkan, the money went towards items with more kedusha according to the intentions of the giver, so too with supporting the yeshiva. If one’s intentions are pure, his donation will support Torah. If his intentions are tainted, the money will go toward feeding the horse.