The Messenger of Allah ﷺ said, "The finest garments in which you may visit Allah in your graves and in your mosques are white ones."
حدثنا محمد بن حسان الأزرق حدثنا عبد المجيد بن أبي رواد حدثنا مروان بن سالم عن صفوان بن عمرو عن شريح بن عبيد الحضرمي
قال رسول الله ﷺ إن أحسن ما زرتم الله به في قبوركم ومساجدكم البياض
No references are available.
[Its chain of transmission is very daif]. Busiri said, "This is a daif chain. Shurayh bin Ubayd did not hear from Abu Darda, as Mizzi stated. And the status of Marwan bin Salim was mentioned earlier." H: 712.