Hadith 643
Narrated Abu Hurairah: The Messenger of Allah ﷺ forbade trailing garments during prayer and that a man should cover his mouth. Abu Dawud said: This tradition has also been narrated by 'Isi on the authority of Ata from Abu Hurairah: The Prophet ﷺ forbade trailing garments during prayer.
Hadith 644
Ibn Juraij said; I often saw Ata praying while letting his garment trail. Abu Dawud said: This (practice of Ata) weakens the tradition (narrated by Abu Hurairah).