How Imam Abu Hanifa reacted to the abuses.
Imam Abdul Razzaq said:
شهدت أبا حنيفة في مسجد الخيف فسأله رجل عن شيء فأجابه. فقال رجل: إن الحسن يقول كذا وكذا. قال أَبُو حنيفة: أخطأ الحسن، قال فجاء رجل مغطى الوجه قد عصب على وجهه فقال:
أنت تقول أخطأ الحسن يا ابن الزانية؟ ثم مضى، فما تغير وجهه ولا تلون، ثم قال:
إي والله أخطأ الحسن وأصاب ابن مسعود.
I am witness that in Masjid al Khayf a person asked a question to Abu Hanifa, He replied (which was in accordance with the fatwa of Ibn Mas`ood ra), The person said: But al Hasan (Tabiyee) say something else, Abu Hanifa said: Al Hasan is on mistake in this matter. A man came by veiling his face and abused O Son of Adulteress, you are saying al Hasan is on Mistake? And he ran away but NOTHING CAME ON THE FACE of Abu Hanifa rather he (politely) said: By Allah al Hasan is on mistake and Ibn Mas`ood is on right in this matter.
[Tareekh Baghdad 15/481: Dr Bashar Awad said: The chain of this report is authentic and it is in accordance with what is known regarding (usul) of Abu Hanifa” Shaykh Zubair Ali Zai said that the praise of Abu Hnaifa is also proven from Abdul Razzaq bin Hammam]