स त्रेधात्मानं व्यकुरुतादित्यं तृतीयं वायुं तृतीयम् ।स एष प्राणस्त्रेधाविहितः ।तस्य प्राची दिक्शिरोऽसौ चासौ चेर्मौ ।अथास्य प्रतीची दिक्पुच्छमसौ चासौ च सक्थ्यौ ।दक्षिणा चोदीची च पार्श्वे ।द्यौः पृष्ठमन्तरिक्षमुदरमियमुरः ।स एषोऽप्सु प्रतिष्ठितः ।यत्र क्व चैति तदेव प्रतितिष्ठत्येवं विद्वान् ॥बृह. १,२.३ ॥
In plain words
He divided himself in three: the sun as a third and the wind as a third. This breath is thus set out in three. Its head is the eastern quarter, and these two, this and that, are its forequarters. Its tail is the western quarter, and these two, this and that, are its hindquarters. The south and the north are its flanks. The sky is its back, the middle region its belly, this earth its breast. It rests upon the waters; and wherever a man goes who knows this, there he rests.