Are the reports of the Ahad (singular) of a speculative or definitive nature?

The questioner : Is the indication of ahad hadiths speculative or definitive?

The Shaykh : Some are speculative and some are definitive. As the Shaykh al-Islam Ibn Taymiyyah explained in his books, and likewise Ibn al-Qayyim, and al-Hafiz Ibn Kathir summarized it in his abridgment on terminology titled "Abridgment of the Sciences of Hadith." So, any hadith that wasThe Shaykh : included in "the two Sahihs" and accepted by the Ummah without any criticism of it, even from those who did not act upon it but rather interpreted it; in this case, their agreement indicates that the Messenger (peace and blessings be upon him) definitely said the hadith. Because they all agreed to affirm it. As for the one who acted upon it, it is clear. And as for the one who did not act upon it, it is not because he criticized it by getting rid of it, as some people sometimes say, "whether true or false." Rather, they acknowledged its authenticity and interpreted it. And interpretation, as the scholars say, is a branch of authentication. Interpretation is a branch of authentication. That is to say: if there had been room for them to reject it regarding its authenticity, they would have been relieved of it and said, "This hadith is not authentic." So, the consensus of these and those, who are from the Ummah, on implementing this hadith by accepting its authenticity provides certainty. So, if there is a circumstance accompanying a singular report, this circumstance raises the indication of the establishment of this hadith from speculative establishment to definitive, scientific establishment. Is that clear? Good.
Yes.