O King, the rivers are the veins of the gigantic body, the trees are the hairs of His body, and the omnipotent air is His breath. The passing ages are His movements, and His activities are the reactions of the three modes of material nature.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नद्योऽस्य नाड्योऽथ तनूरुहाणि महीरुहा विश्वतनोर्नृपेन्द्र । अनन्तवीर्यः श्वसितं मातरिश्वा गतिर्वयः कर्म गुणप्रवाहः
nadyo'sya nāḍyo'tha tanūruhāṇi mahīruhā viśvatanornṛpendra | anantavīryaḥ śvasitaṃ mātariśvā gatirvayaḥ karma guṇapravāhaḥ
SB 2.1.33