Ahmad ibn Hanbal said, “If ʿAbd al-Rahman narrates from a man, that man is reliable.” ⦗1⦘
ʿAli said, “ʿAbd al-Rahman’s nightly devotional portion was half of the Qur’an.”
Muhammad ibn Yahya al-Dhuhli said, “I never once saw a book in ʿAbd al-Rahman ibn Mahdi’s hand—meaning that he transmitted entirely from memory.” ⦗2⦘
Rustah said: I heard ʿAbd al-Rahman say:
“It used to be said: When a man meets someone above him in knowledge, that is his day of spoils; when he meets his peer, he studies with him and learns from him; when he meets someone below him, he humbles himself to him and teaches him. No one qualifies to be an imam in knowledge who relates everything he has heard, nor one who narrates from just anyone, nor one who transmits the anomalous. Memorization exists for the sake of precision.” ⦗3⦘
Ibn Numayr reported that ʿAbd al-Rahman ibn Mahdi said, “Mastery of hadith is an inspiration.”
Yusuf ibn Dahhak said: I heard al-Qawariri say, “Ibn Mahdi could recognize his own hadith and the hadith of others.”
Yahya al-Qattan likewise recognized his own narrations; thus I heard—