Al-Matalib al-'Aliyah 176 — The bathhouse and the dislike of nakedness

It is narrated from Muhammad bin Sirin that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) would not enter the hammam (public bathhouse), and he used to say: "It is among the comforts and luxuries that people have newly introduced (for themselves)."
The chain of this report is sahih (authentic), and Imam Ibn Abi Shaybah narrated it in al-Musannaf (26038).