It is disliked to offer salat in a garment with markings
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ هِشَامٍ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَتْ لَهُ خَمِيصَةٌ لَهَا عَلَمٌ فَكَانَ يَتَشَاغَلُ بِهَا فِي الصَّلاَةِ فَأَعْطَاهَا أَبَا جَهْمٍ وَأَخَذَ كِسَاءً لَهُ أَنْبِجَانِيًّا .
'A'isha reported: The Messenger 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.