In the Journey to the West, who did the Buddha ask to take the Tang Priest and his disciples to the Tibetan Scripture Pavilion to get fake scriptures?

Those are the two venerable persons, and the original text is as follows: The Tathagata opens his mouth to compassion and shows great mercy. He said to Sanzang, "..." He shouted, "Arnold, Gaya, you two lead the four of them to the treasure house and treat him with food first. After fasting, I opened a treasure house, and I checked 35 books in each of my three Tibetan scriptures for several volumes, so that he could spread them to the East and write down Hong En forever. " The second Buddha, ordered by the Buddha, led his four followers downstairs. ...