Sahih al-Bukhari 5342
Sahih al-Bukhari · Book 68: Divorce · A mourning lady can wear clothes of 'Asb.
Narrated Um 'Atiyya:
حَدَّثَنَا الْفَضْلُ بْنُ دُكَيْنٍ ، حَدَّثَنَا عَبْدُ السَّلاَمِ بْنُ حَرْبٍ ، عَنْ هِشَامٍ ، عَنْ حَفْصَةَ ، عَنْ أُمِّ عَطِيَّةَ ، قَالَتْ قَالَ النَّبِيُّ صلى الله عليه وسلم " لاَ يَحِلُّ لاِمْرَأَةٍ تُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ أَنْ تُحِدَّ فَوْقَ ثَلاَثٍ، إِلاَّ عَلَى زَوْجٍ، فَإِنَّهَا لاَ تَكْتَحِلُ وَلاَ تَلْبَسُ ثَوْبًا مَصْبُوغًا إِلاَّ ثَوْبَ عَصْبٍ " .
The Prophet (ﷺ) said, "It is not lawful for a lady who believes in Allah and the Last Day, to mourn for more than three days for a dead person, except for her husband, in which case she should neither put kohl in her eyes, nor perfume herself, nor wear dyed clothes, except a garment of 'Asb"