Sunan al-Nasa'i The Book of al-Bay'ah al-Husain bin Mnswr bin Ja'far الحسين بن منصور بن جعفر ibn Abbas Jabir bin Zayd al-Azdi جابر بن زيد الأزدي Sufyan bin Hussain bin al-Hasan سفيان بن حسين السلمي Y'la bin Muslim bin Hrmz يعلى بن مسلم بن هرمز “I pledged to the Messenger of Allah to be sincere toward ever Muslim.” https://parallelquran.com/hadith/sunan-al-nasai-4166/ Sunan al-Nasa'i The Book of al-Bay'ah al-Hasan bin Muhammad al-Za'farani الحسن بن محمد الصباح الزعفراني Hajjaj bin al-Minhal حجاج بن المنهال Ibn Jurayj ابن جريج Sa'id bin Jubayr سعيد بن جبير الأسدي Y'la bin Muslim bin Hrmz يعلى بن مسلم بن هرمز “A slave came and pledged to the Prophet to emigrate, and the Prophet did not realize that he was a slave. Then his master came looking for him. The Prophet said: ‘Sell him to me,’ and he bought him for two black slaves. Then he did not accept the pledge from anyone until he asked: ‘Is he a slave?”‘ https://parallelquran.com/hadith/sunan-al-nasai-4194/