The Book of Clothes and Adornment
وَحَدَّثَنِي مُحَمَّدُ بْنُ رَافِعٍ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنْ أَيُّوبَ، بِهَذَا الإِسْنَادِ مِثْلَهُ وَقَالَ إِزَارًا غَلِيظًا .This hadith has been reported on the authority of Ayyub with a slight variation of wording
From Sahih Muslim, whose reports the scholars accept as authentic.