Ibn Mājah (1/431) likewise recorded the report through Ḥātim ibn Ismāʿīl and ʿĪsā ibn Yūnus, who both said, “Muḥammad ibn Sulaymān al-Kirmānī narrated it to us,” using the alternate wording. Aḥmad also transmitted it via Ḥātim.

Al-Ḥākim then remarked, “Its chain is sound,” and al-Dhahabī concurred. Indeed, their assessment is correct, for all of the transmitters cited by Ibn Mājah and Aḥmad are reliable narrators found in the two Ṣaḥīḥs, with the sole exception of Muḥammad ibn Sulaymān al-Kirmānī. Although only Ibn Ḥibbān explicitly declared him trustworthy, a number of dependable scholars have narrated from him, as you can see.

Moreover, it appears that he was not the only one to relate the ḥadith. Al-Mundhirī (2/139) states:

“Al-Bayhaqī also transmitted it, saying: Yūsuf ibn Ṭaḥmān narrated it from Abū Umāmah ibn Sahl, from his father, from the Prophet ﷺ with the same meaning, and he added, ‘Whoever leaves his home in a state of ritual purity seeking nothing but this mosque of mine’—meaning the mosque of Madinah—‘in order to pray therein, will receive the reward of a ḥajj.’”

Al-Mundhirī then comments, “Yūsuf ibn Ṭaḥmān is alone in reporting this additional phrase, and he is weak. Allah knows best.”

I say: Al-Dhahabī likewise declared Yūsuf ibn Ṭaḥmān weak, after which he cited this very ḥadith through the route of Zayd ibn al-Ḥabbāb, from Mūsā ibn ʿUbaydah, who said: “Yūsuf ibn Ṭaḥmān, a freedman of the family of Muʿāwiyah, narrated to me from Abū Umāmah,” tracing it back to the Prophet ﷺ with the wording, “Whoever performs ablution in his house, then comes to the Mosque of Qubāʾ and prays four rakʿahs therein, will receive the equivalent of an ʿumrah.” A similar version is transmitted with an acceptable chain.

Al-Dhahabī is clearly alluding to the version narrated by Muḥammad ibn Sulaymān al-Kirmānī. Al-Haythamī also included it in his Majmaʿ (4/11) with this last wording, except that he said: