You searched for: nuptias non concubitus sed consensus facit (Latin - Engelska)

consensus facit legem
consent makes law

cum invitatus fueris ad nuptias non discumbas in primo loco ne forte honoratior te sit invitatus ab e
when thou art bidden of any man to a wedding, sit not down in the highest room; lest a more honourable man than thou be bidden of him;