What is Et Hoc Paratus Est Verificare?

Legal Definition
And this he ls prepared to verify. The Latin form of concluding a plea in confession and avoidance. These words were used, when the pleadings were in Latin, at the conclusion of any pleading which contained new affirmative matter. They expressed the willingness or readiness of the party so pleading to establish by proof the matter alleged in his pleading. A pleading which concluded in that manner was technically said to "conclude with a verification," in contradistinction to a pleading which simply denied matter alleged by the opposite party, and which for that reason was said to "conclude to the country," because the party merely put himself upon the country, or left the matter to the jury. Brown.
-- Black's Law Dictionary
Legal Definition
And this he is ready to verify. (To prove.)
-- Ballentine's Law Dictionary