The Messenger of Allah ﷺ said, "I was not commanded to construct lofty mosques."Ibn Abbas said, "You will surely adorn them as the Jews and Christians adorned theirs."
حدثنا محمد بن الصباح بن سفيان أخبرنا سفيان بن عيينة عن سفيان الثوري عن أبي فزارة عن يزيد بن الأصم
قال رسول الله ﷺ ما أمرت بتشييد المساجد قال ابن عباس لتزخرفنها كما زخرفت اليهود والنصارى
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[Its isnad is daif] Abdul-Razzaq narrated it, no. 5127, from Sufyan Thawri through this route, and Ibn Hibban graded it sahih, no. 305, and Bukhari mentioned it with a suspended chain in his Sahih (2/539, Fath), and the hadith has other routes.Sufyan Thawri was a mudallis, and he narrated it using "an" (without a clear statement of direct hearing).