A tale from Attar of Nishapur:
The lover knocked at the door of his beloved. “Who knocks?” said the beloved from within. “It is I,” said the lover. “Go away. This house will not hold you and me.”
The rejected lover went away into the desert. There he meditated for months on end, pondering the words of the beloved. Finally he returned and knocked at the door again.
“It is you.”
The door was immediately opened.
“100 percent and 100 percent,” I said. “They cannot be separated.”