Garudapurana 1.69.37

1.69.37

śuddhaṃ tato vimalavastranigharṣaṇena syānmauktikaṃ vipulasadguṇakāntiyuktam /
vyāḍirjagāda jagatāṃ hi mahāprabhāvaḥ siddho vidagdhahitatatparayā dayāluḥ //

Then purified by rubbing with a spotless cloth, the pearl will possess vast excellent qualities and lustre. / Indeed, the compassionate Siddha Vyāḍi, of great power over worlds, declared this out of dedication to the welfare of the wise.