1.In 2-3 hundred Hijri so many deviated and wrong Aqeeda thought came to islamic intellectual circle under the influence of greek philosphy.Muatazelis were most prominent among them as they got patronage from Abbasi Khaleefa Mammon and Moatasim
To counter the wrong Aqeeda and approach of Muatazeli ,and others deviated groups, Ahle sunnat Wal Jamaat side was initially led by Imam Ahmad Ibne Hanbal(R.A) and the final assult was led by Imam Abul Hasan Ali Ashari (R.A) (Born in 260 Hijri).Imam Abul Hasan Ashari actually has put the final nail in the coffin of Muatazilla.
All the Muslim intellectuals were influenced and terrified.One can assess the gravity of the situation by this historical fact. Maulana Abul Hasan Ali Nadwi describe in these words “ Famous Ulema were collected and talked and written statement and answer were taken ,Mamoon became very furious after seeing the answer,And ordered to kill two (Shaikh Baseer ibne waleed & Sheikh Ibrahim Ibnul Menhdi) of them.And ordered that all those who still have aqeeda other than Khalqe Quran should be brought infront of him.They were 30,But after this order only 4 remained stick to the correct Aqeeda. These four were Imam Ahmad Ibne Hanbal, Muhammad bin Nuh,.Sajjada and Qawariri. Because of fear second day Sajjada and 3rd day also backtracked.Now only two remained stick to the Aqeeda of Ahle Sunnat Wal Jamaat These glorious two were 1.Imam Ahmad Ibne Hanbal, 2.Muhammad bin Nuh. These two were sent to Mamoon with HATHKADI in there hand” (Tareekh e Dawat O AzeematVol 1 page 95).
You will cry with Joy by knowing the glorious moment of Islamic history.