abu huraira

Dearscholars,Assalamu alaikum.My question is about Abu Huraira (RA) the man of Hadith.We know that we are not supposed to tell bad things about Prophet's(PBUH) companions.But when collecting hadith shouldn't we do research on their personnal character?If the man's character is questionable then we should not take any hadith from him..as Hadith is a very important thing and missing of one single word or one wrong Haith can take us to Hell.Below I've found something about Abu Huraira(RA).My question is why scholars escape this part when take hadith from him?"The first man who was unkind to him was the second Caliph, Umar Bin Khattab. Ibn Athir and Ibn Abi'l-Hadid in his Sharhe-Nahju'l-Balagha, Volume III, page 104 (printed in Egypt), and several others have reported that after Caliph Umar appointed Abu Huraira governor of Bahrain in 21 A.H., the people informed the Caliph that Abu Huraira had amassed great wealth and had purchased many horses. Umar therefore deposed him in 23 A.H. As soon as Abu Huraira entered the court, the Caliph said: "O enemy of Allah and enemy of His Book! Have you stolen Allah's property?" He replied, "I never committed theft, but the people have given me gifts." Ibn Sa'ad in Tabaqat, Volume IV, page 90, Ibn Hajar Asqalani in Isaba, and Ibn Abd-e-Rabbih in Iqdu'l-Farid, Volume I, write that the Caliph said: "'When I made you the governor of Bahrain, you had not even shoes on your feet, but now I have heard that you have purchased horses for 1,600 dinars. How did you acquire this wealth?' He replied, 'These were men's gifts which profit has multiplied much.' The Caliph's face grew red with anger, and he lashed him so violently that his back bled. Then he ordered the 10,000 dinars which Abu Huraira had collected in Bahrain be taken from him and deposited in the account of the Baitu'-Mal."this was not the first time that Umar beat Abu Huraira. Muslim writes in his Sahih, Volume I, page 34, that during the time of the Prophet, Umar Bin Khattab beat Abu Huraira so severely that the latter fell down on the ground. Ibn Abi'l-Hadid writes in his commentary on Nahju'l-Balagha, Volume I, page 360: "Abu Ja'far Asqalani has said: 'According to our great men, Abu Huraira was a wicked fellow. The hadith narrated by him were not acceptable. Umar beat him with a lash and told him that he had changed hadith and had attributed false sayings to the Holy Prophet.'" Ibn Asakir in his Ta'rikh Kabir and Muttaqi in his Kanzu'l-Umma report that Caliph Umar lashed him, rebuked him, and forbade him to narrate hadith from the Holy Prophet. Umar said: "Because you narrate hadith in large numbers from the Holy Prophet, you are fit only for attributing lies to him. (That is, one expects a wicked man like you to utter only lies about the Holy Prophet.) So you must stop narrating hadith from the Prophet; otherwise, I will send you to the land of Dus." (A clan in Yemen, to which Abu Huraira belonged.) Ibn Abi'l-Hadid, in his commentary on Nahju'l-Balagha, Volume I, page 360 (printed in Egypt) reports from his teacher, Imam Abu Ja'far Asqalani, that Ali said, "Beware of the greatest liar among the people, Abu Huraira Dusi." Ibn Qutayba, in Ta'wil-e-Mukhtalifu'l-Hadith, and Hakim in Mustadrak, Volume III, and Dhahabi in Talkhisu'l-Mustadrak and Muslim in his Sahih, Volume II, reporting about the characteristics of Abu Huraira, all say that A'yesha repeatedly contradicted him and said, "Abu Huraira is a great liar who fabricates hadith and attributes them to the Holy Prophet." In short, it is not we alone who have rejected Abu Huraira. According to Caliph Umar, the Commander of the Faithful, Ali, Ummu'l-Mu'minin A'yesha, and other companions and followers of the Prophet said that he was completely unreliable. Accordingly, the Sheikhs of the Mu'tazilites and their Imams and the Hanafi ulema generally reject the hadith narrated by Abu Huraira. Moreover, in his commentary on Muslim's Sahih, Volume IV, Nadwi emphasizes this point: "Imam Abu Hanifa said, 'The companions of the Prophet were generally pious and just. I accept every hadith with evidence narrated by them, but I do not accept the hadith whose source is Abu Huraira, Anas Ibn Malik, or Samra Bin Jundab." We reject the same Abu Huraira, whom Caliph Umar lashed and called a thief and a liar. He was rejected by Ummu'l-Mu'minin A'yesha, Imam Abu Hanifa, and by many companions and followers of the Holy Prophet. We reject the same Abu Huraira who was rejected and called a liar by our master, the chief of the monotheists, Ali, and by the holy Imams and descendants of the Prophet. We reject Abu Huraira who was a belly-worshiper, who, despite knowing the superiority of Ali, ignored him. He preferred his patron, the damned Mu'awiya, sat at his table to relish dainty dishes, and concocted hadith in opposition to Ali. In view of our discussion so far, you and I are obliged to see to it that when a hadith from the holy Prophet is under consideration, we should first refer it to the Holy Qur'an. If the hadith agrees with the Qur'an, we should accept it, otherwise not."