If you give someone $3000, he's gonna need to at least flip that into $10000 or $12000 at a bare minimum before he can give that $3000.
You playing yourself. First off if he flips that $3K into $12K, he still needs that 3 because his business just quadrupled in size. He isn't making enough to give 25% to someone who isn't investing more into the project, even if it is an initial loaner.
Second, if he makes $12K then look how his business is growing. You might as well let that s*** keep growing so you can have a bigger return on your investment rather than sweating that funky $3K that you could afford to let go of anyway