Rig Veda
अध॑ स्म॒ यस्या॒र्चय॑: स॒म्यक्सं॒यन्ति॑ धू॒मिन॑: । यदी॒मह॑ त्रि॒तो दि॒व्युप॒ ध्माते॑व॒ धम॑ति॒ शिशी॑ते ध्मा॒तरी॑ यथा ॥ अध स्म यस्यार्चयः सम्यक्संयन्ति धूमिनः । यदीमह त्रितो दिव्युप ध्मातेव धमति शिशीते ध्मातरी यथा ॥
Of whom smoke-emitting, the flames intensely collect; then, when diffused in the three regions, Agni inflates himself in the firmament, like the blower of a bellows, and sharpens (his flames), as (the fire blazes from the blast) of the blower.
english translation