Abu Nadrah narrates: Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) says: Praying in a single garment is a Sunnah; we used to do so with the Prophet (peace and blessings be upon him), and no objection was made against us. Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: That was only when clothes were scarce; when Allah Almighty has granted ample means, praying in two garments is purer.
Abdullah recorded it in his Zawa'id, and al-Tabarani recorded something similar in al-Mu'jam al-Kabir, which Zirr narrated from them as mawquf (a Companion's own statement). The narrator Abu Nadrah did not hear from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him), nor did he hear from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2205