Fourth Mantra of the Yajurveda –

Sa Vishvayuh Sa Vishvakarma Sa Visvadhayah.
Indrasya tva bhagamsomenatanachmi visno havyam raksh 

The original mantra in sanskrit –

सा विश्वायुः । सा विश्वकर्मा । सा विश्वधायाः ।
इन्द्रस्य त्वा भागꣳ सोमेना तनच्मि  विष्णो हव्यꣳ रक्ष ॥

Meaning of the mantra –

1. There is a mysterious secret, that secret is life of world.

2. It is the secret science and the structure of the universe.

3. It is the describer or the illustrator of whole structure of the life.