In Dragon Ball Super, despite Goku becoming incredibly powerful with Ki from the deities and his limitless fighting ability, he still faces formidable opponents at the divine level, such as the God of Destruction, Beerus, from Universe 7. And of course, Goku has yet to find a way to secure victory against this powerful foe.

However, there is a technique that could potentially allow Goku to defeat Beerus. This technique is said to grant Goku the necessary power to land a hit on Beerus and was first revealed in the spin-off manga “Super Dragon Ball Heroes: Ultra God Mission!!!!”.
It is worth noting that the Super Dragon Ball Heroes series is not widely recognized among fans, which means that not everyone is familiar with this technique.
The technique that could help Goku strike Beerus is called “Beyond God Instant Kamehameha.” It is a combination of the famous Kamehameha wave and a time manipulation technique that Goku previously utilized during his battle against Cell.
In Super Dragon Ball Heroes, Goku perfected this technique by repeatedly using the time manipulation ability while executing the Kamehameha at incredible speed, creating multiple afterimages around the opponent.

Beyond God Instant Kamehameha is a powerful technique that allows Goku to move with speed that surpasses time itself. This ability has been used by Goku to confront Aeos, the main antagonist of the Ultra God Mission story arc.
Aeos is a goddess with the power to manipulate time, but Goku’s rapid attacks are too quick for her to react. By combining the Kamehameha with the time manipulation ability, Goku has created a technique capable of striking even distant powerful enemies.

In Dragon Ball Super, Goku had to face a significant challenge when battling Beerus, who was far stronger than him. During their first encounter, Goku was defeated. But now, he has the opportunity to strike back against this mighty opponent by utilizing a special technique that combines Kamehameha with time manipulation, known as Beyond God Instant Kamehameha.
Although this technique only appears in the spin-off manga Super Dragon Ball Heroes, if it proves strong enough to strike down Aeos, a goddess with the power to control the flow of time, then Goku might just have the chance to defeat the God of Destruction of Universe 7.