The Accepted Qasat, Which Reveals The Meanings Of The Criterion Of Intellects In The Sciences Of Argumentation And Origins Of The Imam, The Scholar Al-Hassan Bin Izz Al-Din Bin Al-Hassan Bin Ali Al-Muayyad (929 Ah) From The Beginning Of The Chapter On Measurement To The End Of The Book “Study And Investigation” PHD (Doctor of Philosophy) thesis by researcher: Abdullah Muhammad Hamad Al-Darsi This thesis was supervised by Professor Dr. Abdul Karim Zidan, and it was discussed in Republic of Yemen/ Sana’a University/ College of Arts/ Department of Islamic Studies in the year 1433AH / 2013 AD to obtain a PHD degree in Islamic Studies.