they, in particular, burden the stomach with a certain heaviness, so the stomach becomes occupied with dealing with and correcting that burden instead of continuing its task of expelling the remaining illness and its effects. As a result, that residue may either come to a standstill or actually increase. When the chard and barley were placed before him, the Prophet instructed ʿAlī to eat from them, for they are among the most beneficial foods for a convalescent—especially when cooked together with the roots of the chard. Such a dish is ideally suited for someone whose stomach is weak, and it does not generate the kinds of bodily humors that are feared.”

60 — “He forbade solitude: that a man should spend the night alone or travel alone.”

Aḥmad recorded it (2/91) from ʿĀṣim ibn Muḥammad, from his father, from Ibn ʿUmar, traced back to the Prophet.
I say: Its chain is sound and meets the standards of al-Bukhārī. All of its transmitters are found in the two Ṣaḥīḥs except Abū ʿUbaydah al-Ḥaddād—whose name is ʿAbd al-Wāḥid ibn Wāṣil—who appears only in al-Bukhārī and is trustworthy. ʿĀṣim ibn Muḥammad is the son of Zayd ibn ʿAbd Allāh ibn ʿUmar ibn al-Khaṭṭāb al-ʿUmari, and he narrated from the four ʿAbd Allāhs, including his grandfather ʿAbd Allāh ibn ʿUmar.
Al-Haythamī cited the report in al-Majmaʿ (8/104) and said: “Aḥmad narrated it, and its transmitters are those of the authentic collections.”