Ibn Ḥajar comments in Fatḥ al-Bārī: “That wording is the more plausible one.”

I add: The report suffers from another hidden defect. Tahdhīb al-Tahdhīb, in the biography of Khaythamah ibn ʿAbd al-Raḥmān, states that he narrated from Ibn Masʿūd and ʿUmar even though he never met either of them; Ibn al-Qaṭṭān likewise remarked, “One must investigate whether he actually heard from ʿĀʾishah (may Allah be pleased with her).”

Concerning the author’s further claim—“that the Prophet ﷺ used to fast the Thursday at the beginning of the month, the Monday that followed it, and the Monday after that”—I have found no trace of this wording in the ḥadith literature, nor does Ibn al-Qayyim cite it in his discussion of the Prophet’s fasting. I fear the narration has been inverted, either in the author’s source or in an earlier transmission. What is authentically established is that the Prophet ﷺ would fast three days of every month: the Monday at the start of the month, the following Thursday, and the Thursday after that. Al-Nasāʾī records this (1/328), as do others, and it appears in Ṣaḥīḥ Abī Dāwūd (1/2017) on the authority of Ibn ʿUmar; al-Nasāʾī, Abū Dāwūd, and Aḥmad also transmit it from one of the Mothers of the Believers, and its chain is sound.

Under the heading “Supplication at the time of breaking the fast” he cites: “Ibn Mājah relates from ʿAbdullāh ibn ʿAmr ibn al-ʿĀṣ that the Prophet ﷺ said, ‘For the fasting person, at the moment he breaks his fast, there is a supplication that will not be rejected.’ ʿAbdullāh, when breaking his fast, would say: ‘O Allah, indeed I….’”

I remark: The author’s silence suggests the ḥadith is authentic, yet that is not the case. Its chain contains Isḥāq ibn ʿUbayd Allah al-Madanī, who is unknown, as al-Mundhirī notes in al-Targhīb. Hence Ibn al-Qayyim, in Zād al-Maʿād, alluded to its weakness. I have traced the isnād and discussed it at some length elsewhere.