The reason that this basketball drill is called the Steve Nash passing drill is because as a player Steve Nash really mastered being able to fire a quick and accurate pass off of the dribble. This type of pass is important for point guards to learn. Because as they are handling the basketball an open teammate may come free, and they may not have time to grab the ball with two hands before making the pass. If they have the one hand push pass in their game they can hit the open teammate. However, if the one hand wrap around pass is not mastered, it can be an easy pass for the defense to steal. It cannot be a lazy bounce pass, but rather it needs to be accurate and made with some snap on it.
This basketball passing drill is going to specifically work on the wrap around push pass which can be used to get the ball around a defender that is in the passing lane. Having it be a partner drill also allows for each player to get a lot of repetitions at this type of pass, and to be able to learn to master it. It is a great drill to use for basketball training, practices, or camps because it doesn't require much space and keeps every player involved.