A waiver of property and profit or WP&P was a legal document used in Ferengi society prior to a wedding. The waiver stated that, in the event the marriage ended, the female gave up any and all claim to her husband's estate. That included any money or property, as Ferengi females were prohibited by law from earning money or owning property.
In 2373, Rom wanted to get his fiancé Leeta to sign such a document. He feared Leeta would be like his first wife Prinadora, whose father cheated Rom out of all his money, and who eventually left him for a richer man. Leeta refused to sign such an agreement, which briefly resulted in the cancellation of the wedding, but Rom rendered the WP&P unnecessary by giving all his money to the Bajoran War Orphans Fund. (DS9: "Ferengi Love Songs")