Quotes from The Sutra of Queen Śrīmālā of the Lion’s Roar, Chapter 13

The Inherently Pure Nature

“When Queen Śrīmālā had explained the difficulties in comprehending [the mind is inherently pure in nature but contains defilement], after she was questioned by the Buddha. The Buddha, with extreme joy, praised her, “Yes, it is so! It is so! The fact that there is defilement in a mind that its nature is inherently pure is difficult to comprehend.”

《勝鬘師子吼一乘大方便方廣經》

自性清淨品 第十三

【勝鬘夫人說是難解之法問於佛時，佛即隨喜：「如是如是！自性清淨心而有染污，難可了知。】