Bhagavatapurana 3.8.29

3.8.29

parārdhya-keyūra-maṇi-praveka- paryasta-dordaṇḍa-sahasra-śākham /
avyakta-mūlaṃ bhuvanāṅghripendram ahīndra-bhogair adhivīta-valśam //

29. (He saw the Purusha) the great tree of the Universe whose thousand arms are dazzling with priceless gems and Keyuras, whose root is Avyakta (invisible in Prakriti or Brahman) and whose trunk and arms are coiled round with the best of serpents.