O best amongst the Kurus, the clouds which carry water are the hairs on His head, the terminations of days or nights are His dress, and the supreme cause of material creation is His intelligence. His mind is the moon, the reservoir of all changes.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ईशस्य केशान् विदुरम्बुवाहान् वासस्तु सन्ध्यां कुरुवर्य भूम्नः । अव्यक्तमाहुर्हृदयं मनश्च सचन्द्रमाः सर्वविकारकोशः
īśasya keśān vidurambuvāhān vāsastu sandhyāṃ kuruvarya bhūmnaḥ | avyaktamāhurhṛdayaṃ manaśca sacandramāḥ sarvavikārakośaḥ
SB 2.1.34