Dragon Ball Super S04E26 - "Will There Be a Counterattack?! The Invisible Killing Strike!!"

As it seemed Goku is beyond Piccolo's ability to heal, his heart is jump started when the energy attack he launched early in midair hits him. After telling his sons and Piccolo not to get involve, having deduced Hit's assassination technique to be an invisible energy blast, Goku leaves and calls Hit out as they resume their fight. Nearby, Champa and Vados are watching fight with the latter revealed to have served as an intermediary for Hit's client while explaining to Champa that the assassin uses the stored time from his Time Skips to create a pocket dimension which plays in his tangibility. They are later joined by Vegeta, Beerus, and Whis as Goku uses his power to damage Hit's pocket dimension with his a Kamehameha causing a double knockout. In the aftermath, Goku reveals himself as Hit's client with Whis and Vados helping set everything up so he can fight the assassin at his best. Hit takes his leave soon after, intent to fight Goku another time as the job has no deadline.