This could be based on an imagined marriage ceremony or could be the marriage of the seer herself. This collection of verses is mainly form the RigVeda, and has been compiled by Sri Anirban to adapt it for use in Hindu marriages. The verses are full of Vedic imagery. I will use a Bangla translation by Professor Gouri DharmapAl, and re-translate them into english. RigVeda 10.85.44 Trishtup chhanda.
Groom takes the bride to the altar and both sit down.
RitenAdityAs tishthanti divi somo adhi shritah. SomenAdityA valinah somena prithivi mahi. Atho nakshatrAnAm eshAmupasthe soma Ahitah. Somam manyate papivan yat sampishanti oshadhim. Somam yam brahmAno vidurna tasyAshnAti kaschana.