this in al-Ḍaʿīfah (253), and then expanded upon it with further clarification and verification, while refuting those ignorant contemporaries who deemed it good, under no. (5188).
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As for the hadith of Ibn ʿUmar, I had previously traced it in al-Ḍaʿīfah under no. (255), before it became clear to me that the chain of transmission of Ibn Ḥujayrah—also cited there under no. (254)—is good. There is therefore no need to repeat it, especially since its documentation is lengthy: it is narrated by six hadith masters, and I later came across a seventh, namely al-Bayhaqī in al-Sunan (7/102).
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As for the hadith of Ibn ʿAbbās, it has two routes:
The first: Bisṭām ibn Ḥabīb narrated to us: al-Qāsim ibn ʿAbd al-Raḥmān narrated to us, from Abū Ḥāzim, from him, with the hadith under discussion.
Al-Bayhaqī also recorded it, but made no comment on it!
I have not found a biographical notice for this Bisṭām.
As for al-Qāsim ibn ʿAbd al-Raḥmān, he is al-Anṣārī. Abū Ḥātim declared him weak, and Abū Zurʿah said: “His hadith is rejected.”
The other: Muḥammad ibn Muʿāwiyah al-Naysābūrī narrated to us: Nahshal ibn Saʿīd narrated to us, from al-Ḍaḥḥāk, from him, attributed to the Prophet, with the wording:
“Travel, and you will be healthy; fast, and you will be healthy; and go forth on campaign, and you will gain spoils.”
Ibn ʿAdī recorded it in al-Kāmil (7/57).
I say: This is a disastrous chain of transmission. Nahshal ibn Saʿīd is abandoned, and Isḥāq ibn Rāhawayh declared him a liar. Muḥammad ibn Muʿāwiyah al-Naysābūrī is likewise; al-Ḥāfiẓ said: