Humayd and Uthman al-Batti say: We offered the Zuhr and Asr prayers behind Sayyiduna Anas (may Allah be pleased with him), and we heard him reciting Surah al-A'la.
Al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators have been declared trustworthy.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 2697