5. The Book of Mosques and Places of Prayer - كتاب الْمَسَاجِدِ وَمَوَاضِعِ الصَّلاَةِ
15) Chapter: It Is Not Advisable To Pray Wearing A Cloth Which Has Designs Or Markings Over It
'A'isha reported:
The Apostle of Allah (way peace be upon him) had a garment which had designs upon it and this distracted him in prayer. He gave it to Abu Jahm and took a plain garment in its place which is known anbijaniya.