in the science of legal methodology, so relying on the general wording here is incorrect; perhaps he thought it was another narration altogether!
Regarding the number of rakʿahs he writes: “1. From Samurah ibn Jundub, who said: The Messenger of Allah ﷺ commanded us to pray during the night as much or as little as we wished, and to make the last of it witr.” It was reported by al-Ṭabarānī and al-Bazzār.
I say: The author quoted this from Majmaʿ al-Zawāʾid 2/252, but he did not mention the source, nor did he cite the remainder of al-Haythamī’s comment that clarifies its status: “Its chain is weak.” He may instead have taken it from al-Targhīb 1/217, where al-Munāwī introduces it with “It is reported,” signaling its weakness, as he explains in his introduction. The chains of both al-Bazzār and al-Ṭabarānī contain a narrator accused of fabrication, and al-Bazzār himself graded the report weak immediately after quoting it.
I did find a corroborating narrator and another route for it, yet the hadith is not strengthened thereby because of their fragility; I have detailed this in al-Ḍaʿīfa 5284.
He continues: “2. It is reported from Anas (may Allah be pleased with him), attributed to the Prophet ﷺ: ‘One prayer in my mosque equals ten thousand prayers … and greater than all of that are the two rakʿahs a servant performs in the depths of the night.’ It was narrated by Abū al-Shaykh Ibn Ḥayyān in Kitāb al-Thawāb, and al-Mundhirī remained silent about it in al-Targhīb wa-l-Tarhīb.”
I say: Not so; rather, he marked it weak by prefacing it with the phrase “It is reported,” as he made clear in his introduction. I have quoted his words there—consult it.
Moreover, the content of the hadith itself points to its weakness: it claims that praying in his ﷺ mosque equals ten thousand prayers, whereas the authentic narrations establish the figure as one thousand. Therefore the report is munkar (rejected).