Bhagavatapurana 2.1.34

2.1.34

īśasya keśān vidurambuvāhān vāsastu sandhyāṃ kuruvarya bhūmnaḥ /
avyaktam āhurhṛdayaṃ manaścasa candramāḥ sarvavikārakośaḥ //

34. O best of the Kuru race the wise say that the clouds are His hair; the Sandhya (evening) is the garment of the perfect Lord, the Avyakta (the principle) of matter in the subtle state is His heart, and the famous moon is His mind, the store house of all changes and modifications.