Sayyidah Aisha (may Allah be pleased with her) narrated that the Noble Prophet (peace and blessings be upon him) prayed in a striped cloak, then said: "Its designs distracted me. Take it and return it to Abu Juhm and bring a plain cloak from him instead."
Hadith Referenceاللؤلؤ والمرجان / كتاب المساجد ومواضع الصلاة / 326
Hadith Gradingمحدثین:«صحیح»
Hadith Takhrij«صحیح، أخرجه البخاري في: 10 كتاب الأذان: 93 باب الالتفات في الصلاة»
Brief Explanation
This cloak was given to you as a gift by Abu Juhm, but you did not like its patterns and designs because they were affecting your concentration and humility (khushu‘ wa khudu‘) in prayer. Therefore, you returned it. It is understood from this that there should not be anything in prayer that causes distraction.