8 — The Book of Mosques

1 — The Virtue of Building Mosques

688 — ʿAmr ibn ʿUthmān informed us, saying: Baqiyyah narrated to us, from Baḥīr, from Khālid ibn Maʿdān, from Kathīr ibn Murrah, from ʿAmr ibn ʿAbasah, that the Messenger of Allah ﷺ said: "Whoever builds a mosque in which Allah is remembered, Allah, Glorified and Exalted, will build for him a house in Paradise."(1)

2 — Chapter on Vying in Glory over Mosques

689 — Suwayd ibn Naṣr informed us, saying: ʿAbdullāh ibn al-Mubārak informed us, from Ḥammād ibn Salamah, from Ayyūb, from Abū Qilābah, from Anas, that the Prophet ﷺ said: "Among the signs of the Hour is that people will vie in glory over mosques."(2)

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= Abū Kathīr, with it.
And in Aḥmad's latter narration, al-Bukhārī, and Ibn Ḥibbān: "until you see me, and tranquility is upon you."
And it will come via the route of Hishām al-Dastuwāʾī and Ḥajjāj ibn Abī ʿUthmān, from Yaḥyā ibn Abī Kathīr, under number (790).

(1) A sound ḥadīth due to corroborating evidence, and this chain is weak — Baqiyyah, who is Ibn al-Walīd, practices tadlīs of taswiyah (concealing weak links in the chain), and he did not explicitly state that he heard (taḥdīth) at the levels of the chain. The rest of its narrators are trustworthy. It is in al-Sunan al-Kubrā under number (769).
It was also recorded by Aḥmad (19440) from Ḥaywah ibn Shurayḥ, from Baqiyyah, with this chain, with an addition regarding the virtue of freeing a slave and of having gray hair in Islam.
It has a supporting witness from the ḥadīth of ʿUthmān, may Allah be pleased with him, recorded by al-Bukhārī (450) and Muslim (533).
See other supporting witnesses in the commentary on the ḥadīth of ʿAbdullāh ibn ʿAmr in al-Musnad (7056).

(2) Its chain is sound — Ayyūb is Ibn Abī Tamīmah al-Sakhtiyānī, and Abū Qilābah is ʿAbdullāh ibn Zayd al-Jarmī. It is in al-Sunan al-Kubrā under number (770). =