6 - Chapter on Repeating the Hadith

3652/1 - Musaddad narrated to us, Abu 'Awanah narrated to us, from 'Abd al-A'la, from Sa'id ibn Jubayr, from Ibn 'Abbas, that the Prophet, peace and blessings be upon him, said: "Whoever says [something] about the Qur'an without knowledge, let him take his seat in the Fire."(1)

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(1) Its chain is weak due to the weakness of 'Abd al-A'la — and he is Ibn 'Amir al-Tha'labi — Abu 'Awanah: he is al-Waddah ibn 'Abdullah al-Yashkuri.
Ahmad (2069) also recorded it, and al-Tirmidhi (3181) and (3182), and al-Nasa'i in "al-Kubra" (8530) and (8031), with the wording: "Whoever says [something] about the Qur'an without knowledge — and in one narration: with his own opinion — let him take his seat in the Fire." Al-Tirmidhi said: This is a hasan hadith.
Ibn al-Qattan al-Fasi also declared it authentic in "Bayan al-Wahm wa al-Iham" 5/253. We say: Thus said al-Tirmidhi and Ibn al-Qattan, even though in its chain is 'Abd al-A'la ibn 'Amir al-Tha'labi, who is weak as mentioned previously — Yahya al-Qattan, Ibn Mahdi, Ahmad, Abu Zur'ah, and Abu Hatim all declared him weak.
Moreover, Ibn al-Qattan himself had declared weak a hadith of Ibn 'Abbas that preceded with the author under number (3208), [transmitted] through 'Abd al-A'la al-Tha'labi — so we do not know what basis he had for declaring this hadith authentic here?!!
And see what precedes it.
Note: We have confirmed this hadith from "Tuhfat al-Ashraf" (5543), and al-Hafiz al-Mizzi indicated there that it is in the narration of Abu al-Hasan Ibn al-'Abd, and Abu al-Qasim did not mention it.
Al-Tabari said: Whatever pertains to the interpretation of the verses of the Qur'an whose knowledge cannot be attained except through the explicit text of the statement of the Messenger of Allah, peace and blessings be upon him, or through his establishing an indication of it, it is not permissible for anyone to speak about it with his own opinion. Rather, the one who speaks about it with his own opinion — even if he hits the truth in it — is mistaken in what he did by speaking about it with his own opinion, because his hitting [the truth] is not the hitting of one certain that he is correct; rather, it is the hitting of a diviner and one who conjectures. And the one who speaks about the religion of Allah with conjecture speaks about Allah what he does not know, and Allah, Glorified be He, has forbidden that to His servants in His Book, saying: {Say: My Lord has only forbidden immoralities — what is apparent of them and what is concealed — and sin, and unjust aggression, and that you associate with Allah that for which He has sent down no authority, and that you say about Allah what you do not know} [al-A'raf: 33].