योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-9, verse-1

भुशुण्ड उवाच ।
अबुद्ध्यमानश्चेत्यादिचिद्रूपमपि चानघ ।
शान्तचिद्धन एवास्व निर्मलाप्स्वन्तरंशुवत् ॥ १ ॥

bhuśuṇḍa uvāca ,
abuddhyamānaścetyādicidrūpamapi cānagha ,
śāntaciddhana evāsva nirmalāpsvantaraṃśuvat 1

1. Bhusunda said:—The unintelligible objects of thought are phenomena of the intellect; they lie as calmly in the great mass or inert body of the intellect, as the sunbeams shine in the bosom of a clear basin of water.