An Introduction To The Science Of Hadith

The Classification Of Hadith: According To The Manner In Which The Hadith Is Reported

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Mudallas Hadith & Tadlis

Different ways of reporting, e.g. (he narrated to us), (he informed us), (I heard), and (on the authority of) are used by the reporters of hadith. The first three indicate that the reporter personally heard from his shaikh, whereas the fourth mode can denote either hearing in person or through another reporter.

A Mudallas ("concealed") hadith is one which is weak due to the uncertainty caused by tadlis. Tadlis (concealing) refers to an isnad where a reporter has concealed the identity of his shaikh. Ibn al-Salah describes two types of tadlis:

  1. Tadlis al-Isnad. A person reports from his shaikh whom he met, what he did not hear from him, or from a contemporary of his whom he did not meet, in such a way as to create the impression that he heard the hadith in person. A mudallis (one who practises tadlis) here usually uses the mode ("on the authority of") or ("he said") to conceal the truth about the isnad.

  2. Tadlis al-Shuyukh. The reporter does mention his shaikh by name, but uses a less well-known name, by-name, nickname etc., in order not to disclose his shaikh's identity.38

    Al-`Iraqi (d. 806), in his notes on Muqaddimah Ibn al-Salah, adds a third type of tadlis:

  3. Tadlis al-Taswiyyah. To explain it, let us assume an isnad which contains a trustworthy shaikh reporting from a weak authority, who in turn reports from another trustworthy shaikh. Now, the reporter of this isnad omits the intermediate weak authority, leaving it apparently consisting of reliable authorities. He plainly shows that he heard it from his shaikh but he uses the mode "on the authority of" to link his immediate shaikh with the next trustworthy one. To an average student, this isnad seems free of any doubt or discrepancy. This is known to have been practised by Baqiyyah b. al-Walid, Walid b. Muslim, al-A'mash and al-Thauri. It is said to be the worst among the three kinds of tadlis.39

Ibn Hajar classifies those who practised tadlis into five categories in his essay Tabaqat al-Mudallisin:

Tadlis, especially of those in the last three categories, is so disliked that Shu`bah (d. 170) said, "Tadlis is the brother of lying" and "To commit adultery is more favourable to me than to report by way of Tadlis."41


A Musalsal (uniformly-linked) isnad is one in which all the reporters, as well as the Prophet (may Allah bless him and grant him peace), use the same mode of transmission such as 'an, haddathana, etc., repeat any other additional statement or remark, or act in a particular manner while narrating the hadith.

Al-Hakim gives eight examples of such isnads, each having a different characteristic repeated feature:

Knowledge of Musalsal helps in discounting the possibility of tadlis.

   Islamic Awareness Hadith `Ulum According To The Manner In Which The Hadith Is Reported

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