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.
Sunan Abi Dawud Book 2, Hadith 253
← Previous Hadith ‘A’ishah came to Safiyyah Umm Talha al-Talhat and seeing her daughter she said: The Messenger of Allah (ﷺ) entered (into the house) and there was a girl in my apartment. He gave his lower garment (wrapper) to me and said; tear it into two pieces and give one-half to this (girl) and the other half to the girl with Umm Salamah. I think she has reached puberty, or (he said) I think they have reached puberty.

Abu Dawud said: Hisham has narrated it similarly from Muhammad b. Sirin.

Sunan Abi Dawud Book 2, Hadith 252 Next Hadith → This (practice of ‘Ata’) weakens the tradition (narrated by Abu Hurairah).

Sunan Abi Dawud Book 2, Hadith 254