قاعدة من سعى في نقض ما تم من جهته فسعيه مردود عليه و تطبيقاتها الفقهية

Abstract EN

IN The name of God the merciful The compassionate This research tackled the basic of who worried to revoke what has done from his side his ehhort returned to him it is one of the most important basics in Islamic Philology.

The Hauahi school retired in mentioning this from lather Islamic schools despite its specialist branches.

Matlers and application agreed with them.

Ive mentioned in this research the de Finition of this basic and explained it all in all and in details.

The references which I mentioned authority is from al Quran and Alsunn Al- nabaulia and its applications on philology branches and the exceptions frown this applications.

I've threaded in this research the scientific serious method which depend on collecting the scientific material from its original sources and mention Al-Ayat Al QURANIA with the name of the sure and its Al-sahihain.

I've put the most important result which I've reached at the end of this research.