Proof of sacramental absolution required for marriage in France during the French Revolution?

**Proof of *sacramental absolution* required for marriage in France during the French Revolution?** I remember reading an ecclesiastical works of how the Catholic Church had suffered during the French Revolution and how the Church responded in various ways. The dechristianization of France during the French Revolution was literally a terror. One of the things, I can recall, was the fact that those who wished to get married had to produce a ***Receipt of Absolution*** from a confessor that they had been to confession and received sacramental absolution for their parish priest to proceed with the marriage of the couple, within the Catholic Church. How long after the French Revolution this norm remained in force I am unaware of. If anyone in able to find a source which states the requirements for this ***proof of absolution*** in either French or English, I would greatly appreciate it! I know it was required, but now I can not find a source for it.