It was narrated that Ibn ‘Abbas said:The Prophet (ﷺ) said: “I was commanded not to tuck up my hair or my garment.”**Drawing together during prostration to protect it from the dirt.
حَدَّثَنَا بِشْرُ بْنُ مُعَاذٍ الضَّرِيرُ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، وَأَبُو عَوَانَةَ عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ النَّبِيُّ ـ صلى الله عليه وسلم ـ " أُمِرْتُ أَنْ لاَ أَكُفَّ شَعْرًا وَلاَ ثَوْبًا " .
IbnMaja
Establishing the Prayer and the Sunnah Regarding Them • Hadith 1040