It was narrated that Ibn 'Abbas said:"The Messenger of Allah said: 'Wash the Muhrim in the two garments in which he entered Ihram, and wash him with water and lotus leaves, and shroud him in his two garments, and do not put perfume on him nor cover his head, for he will be raised on the Day of Resurrection in Ihram."'
أَخْبَرَنَا عُتْبَةُ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا يُونُسُ بْنُ نَافِعٍ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " اغْسِلُوا الْمُحْرِمَ فِي ثَوْبَيْهِ اللَّذَيْنِ أَحْرَمَ فِيهِمَا وَاغْسِلُوهُ بِمَاءٍ وَسِدْرٍ وَكَفِّنُوهُ فِي ثَوْبَيْهِ وَلاَ تُمِسُّوهُ بِطِيبٍ وَلاَ تُخَمِّرُوا رَأْسَهُ فَإِنَّهُ يُبْعَثُ يَوْمَ الْقِيَامَةِ مُحْرِمًا " .
Nesai
The Book of Funerals • Hadith 1904