He transmitted hadith from: Hisham ibn ‘Urwah, ‘Uthman ibn Ghiyath, Ash‘ath ibn ‘Abd al-Malik al-Humrani, Bahz ibn Hakim, Isma‘il ibn Abi Khalid, Hisham ibn Hassan, al-Hirmas ibn Habib, al-Nahhas ibn Qahm, ‘Awf al-A‘rabi, Ibn ‘Awn, Humayd al-Tawil, Abu Na‘ama al-‘Adawi, Ibn Abi ‘Arubah, Dawud ibn Abi al-Furat, ‘Abbad ibn Mansur, Kahmas, Shu‘bah, al-Mas‘udi, Hammad ibn Salamah, and a great many others.
Among those who narrated from him were: Yahya ibn Ma‘in, Yahya ibn Yahya, Ishaq ibn Rahuyah, Ishaq al-Kawsaj, Ahmad ibn Sa‘id al-Darimi, Ahmad ibn Sa‘id al-Ribati, al-Husayn ibn Hurayth, Raja’ ibn Murajja, Sulayman ibn Salm al-Masahifi, Bayan ibn ‘Amr al-Bukhari, Sulayman ibn Ma‘bad al-Sinji, ‘Abd Allah ibn ‘Abd al-Rahman al-Darimi, ‘Abd Allah ibn Munayr al-Marwazi, ‘Ubayd Allah ibn Sa‘id al-Sarkhasi, ‘Ali ibn al-Hasan al-Dhuhli, Muhammad ibn Rafi‘ al-Qushayri, Mahmud ibn Ghaylan, Muhammad ibn Yusuf al-Bikandi, and many others besides them.
His reliability was vouched for by Yahya ibn Ma‘in, Ibn al-Madini, and al-Nasa’i.
Abu Hatim said: “Reliable; a man of the Sunnah.” (1)
Hamduwayh ibn Muhammad, reporting from Muhammad ibn Khāqān, said: Ibn al-Mubarak was asked about al-Nadr ibn Shumayl, and he replied, “A pearl lost between the two Marws”—meaning the district of Marw and the district of Marw al-Rudh. (2)