Renunciation is the foundation of bodhicitta. Having aroused bodhicitta, one is qualified to receive the bodhisattva vows which one can bestow on oneself. Afterwards, one can begin the practice on emptiness. Knowing that the union of wisdom and compassion is the combination of emptiness and bodhicitta essentially means that one has understood perfectly the quintessence of all the exoteric and esoteric teachings of Mahayana Buddhism.
Renunciation and bodhicitta should be practiced separately in proper order and followed by the practice of emptiness. As such, renunciation and bodhicitta that were practiced beforehand will also turn into the wisdom of emptiness.
~ Depicted from THE RIGHT VIEW : Buddhism -- The Defination