“When you ornament your mosques and gild your copies of the Qur’an, destruction will befall you.” This wording is cited in Muntakhab Kanz al-ʿUmmāl.

Among the related reports is the marfūʿ narration of ʿUmar ibn al-Khaṭṭāb:

“No people ever lapse into evil deeds without at the same time adorning their mosques.”

Its chain is weak, as noted earlier.

Al-Bukhārī also quotes him in suspended (muʿallaq) form, stating that he

“ordered the construction of a mosque, saying, ‘Shield the people from the rain, but beware of painting it red or yellow and thereby tempting them.’”

Al-Ḥāfiẓ comments: “This is a fragment of the account that recounts the renovation of the Prophet’s Mosque.”

Al-Mirqāt records: “Ibn Masʿūd passed by an embellished mosque and said, ‘May Allah curse the one who did this.’” No specific source is cited for this remark.

Taken together, these narrations confirm the Prophet’s—peace and blessings be upon him—prohibition against decorating mosques. He further hinted at this in the following ḥadīth:

“The Hour will not be established until people vie with one another over their mosques.”

This ḥadīth was related by al-Nasāʾī, al-Dāramī, and Ibn Mājah.