Imam Abd al-Razzaq (may Allah have mercy on him) narrates that he heard Imam Malik (may Allah have mercy on him) say: "The Messenger of Allah (peace and blessings be upon him) appointed Qarn as the miqat for the people of Iraq." I said: "O Abu Abdullah! Who narrated this to you?" He said: "Nafi', from Sayyiduna Ibn Umar (may Allah be pleased with them both)."
Imam Abd al-Razzaq (may Allah have mercy on him) said: "Some of the people of Madinah said to me: Imam Malik erased this hadith from his book."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith was narrated from Imam Malik (may Allah have mercy on him) only by Abd al-Razzaq, and Ishaq bin Rahwayh is alone in narrating it."