佛說觀佛三昧海經 7.17

7.17

"Then the Tathāgata, with a brahma voice, like a loving mother comforting an infant, caused that nāga king and the rākṣasīs to receive the conversion of the Dharma King, and invited the Buddha to take his seat. At that time the king also set out a high couch of the finest and softest rugs and woolen blankets, spread a canopy of fine white cotton cloth, with nets of real pearls covering it all above, and invited the Buddha, the Bhagavat, to reside within the canopy.