Benefit: When you use the Ride-by Attack feat, if your attack hits, you may also make an attack against a target adjacent to your original target. This additional attack has a -5 penalty to the attack roll. You may use this feat whether riding a mount or using a flying item such as a broom of flying or carpet of flying.
Pathfinder Companion: Qadira, Gateway to the East. Copyright 2009, Paizo Publishing, LLC; Author: Brian Cortijo. © 2015, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, Ross Beyers, Logan Bonner, Jason Bulmahn, Robert Emerson, Tim Hitchcock, Jason Nelson, Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Robert Schwalb, Mark Seifter, and Russ Taylor.