Verse 58

इमौ मही मे चरणाविदं मे गगनं शिरः ।इदं वपुर्मे त्रिजगदिमे मे कुक्षयो दिशः

In plain words

These two are my feet: the earth. This is my head: the sky. This is my body: the three worlds. These are the flanks of my belly: the quarters.