Agni Vaisvanara received treasures in the rising of the sun from the samudra lower and upper, from sky/heaven and earth.
Rigveda VII 6, 7: quoted in Kazanas, N. (2009). Indo-Aryan origins and other Vedic issues. Aditya Prakashan. ch. 5 Samudra in the Rgveda
Indra again conquers an enemy and receives in tribute 'heads of horses' (7.18.19).
M Danino in History of ancient India / editors, Dilip K. Chakrabarti and Makkhan Lal. v. 3. The texts, political history and administration, till c. 200 BC. I.2. The Horse and the Aryan Debate
Sarasvati, pure in her course from the mountains to the sea.
Variant: Pure in her course from mountains to the ocean, alone of streams Sarasvati hath listened. Thinking of wealth and the great world of creatures, she poured for Nahusa her milk and fatness. (in Lal, B. B. (2005). Can the Vedic people be identified archaeologically?–An approach. IT, 31, 173-194.)
Coming together, glorious, loudly roaring - Sarasvatī, Mother of Floods, the seventh- With copious milk, with fair streams, strongly flowing, full swelling with the volume of their water.
RV 7:36:6
THIS stream Sarasvatī with fostering current comes forth, our sure defence, our fort of iron. As on a car, the flood flows on, surpassing in majesty and might all other waters. Pure in her course from mountains to the ocean, alone of streams Sarasvatī hath listened. Thinking of wealth and the great world of creatures, she poured for Nahuṣa her milk and fatness.