Imam Muslim Nishapuri 

Abu al-Husayn Asakir ad-Din Muslim ibn al-Hajjaj ibn Muslim ibn Ward ibn Kawshadh al-Qushayri an-Naysaburi أبو الحسين عساكر الدين مسلم بن الحجاج بن مسلم بن وَرْد بن كوشاذ القشيري النيسابوري; after 815 – May 875 CE / 206 – 261 AH) or Muslim Nayshāpūrī (Persian: مسلم نیشاپوری), commonly known as Imam Muslim, was an Islamic scholar from the city of Nishapur, particularly known as a muhaddith (scholar of hadith). His hadith collection, known as Sahih Muslim, is one of the six major hadith collections in Sunni Islam and is regarded as one of the two most authentic (sahih) collections, alongside Sahih al-Bukhari.