John Gower, Confessio Amantis, (The Tale of Constance, the Sultaness's motivation for destroying the Christians)

2.636   [ . . . ]   "If it so is
2.647: Mi Sone him wedde in this manere,
2.648: Than have I lost my joies hiere,
2.649: For myn astat schal so be lassed."

That is, she will lose the socio-political power of her estate ("astat") if the Christians are running the court.