this, his books are replete with the knowledge (1) of men such as Mālik, al-Thawrī, al-Awzā'ī, al-Layth ibn Sa'd, Wakī' ibn al-Jarrāh, Yahyā ibn Sa'īd al-Qattān, Hushaym ibn Bashīr, Abd al-Rahmān ibn Mahdī, and their peers, rather than that of Mūsā ibn Ja'far, Ali ibn Mūsā, Muhammad ibn Ali, and their peers. Had he found what he sought among men such as the latter, he would have been more eager than anyone to pursue it.
If anyone claims that they possessed a store of knowledge unavailable to those other scholars but concealed it, what benefit could people derive from knowledge that they conceal? (2) Knowledge that is not communicated is like a treasure from which nothing is spent. How (3) can people follow as their imam someone who does not disclose hidden knowledge to them? Such knowledge is like a nonexistent imam: neither is of any benefit, nor does either bring about any grace or serve any beneficial purpose.
If they say instead that they disclosed (4) it to their select circle but not to these imams, the answer is:
First, this is a lie about them. No one comparable to Ja'far ibn Muhammad came after him, and these imams received knowledge from him (5)—including Mālik, Ibn Uyayna, Shu'ba, al-Thawrī, Ibn Jurayj, Yahyā ibn Sa'īd, and their peers among the well-known (6), eminent scholars.