Don't do it...
You'll reduce the strength, flavors, and everything else you've put into the brew. Far, far, far, far better to have a bit less brew to bottle, then to weaken it.
Also, this is yet another reason why many of us have passed on racking to another vessel without a damned good reason. IF we're going to rack, we brew more so that we still get close enough to our target volume for bottles/keg.
Next time, skip racking unless you had a damned good reason. Just because some kit directions say to, after X days, is NOT a good reason. Leave it in primary until it's ready for bottle/keg and enjoy it. Leaving the brew on the yeast cake will do the batch far more benefit than removing it from the cake early. Read up about this from the so many threads already on the site...