वायुर्वाव संवर्गो यदा वा अग्निरुद्वायति वायुमेवाप्येति यदा सूर्योऽस्तमेति वायुमेवाप्येति यदा चन्द्रोऽस्तमेति वायुमेवाप्येति ॥ ४.३.१ ॥
In plain words
The wind is the gatherer. When a fire goes out, it goes into the wind. When the sun sets, it goes into the wind. When the moon sets, it goes into the wind.