When the Buddha was meditating, he was out to solve an existential problem that humanity faced. That was the overcoming of desire and union with the Absolute. He achieved this. It is called Buddhahood. It is called Nirvana. It is called other things. But what empowered his journey was what I call universal compassion. He was doing this for all sentient beings, not just himself. So, when Mara (the devil, in Sanskrit) tried to stop him, he had all of his demons launch arrows to kill the Buddha. However, when the arrows got close, they all turned into flowers and then as the Buddha was sitting in Nirvana, countless flowers could be seen falling down all around him. It was literally the energy of compassion that changed the poisoned arrows into beautiful flowers. Namaste.