"The Messenger of Allah said: 'No woman should mourn for anyone who dies for more than three days, except for a husband, for whom she should mourn for four months and ten days. She should not wear garments that are dyed or patterned, or put on kohl or comb her hair, and she should not put on any perfume except when purifying herself after her period, when she may use a little of Qust or Azfar.'" (Using translation from Nasāʾī 3534)  

قَالَ رَسُولُ اللهِ ﷺ «لَا تُحِدُّ امْرَأَةٌ عَلَى مَيِّتٍ فَوْقَ ثَلَاثٍ إِلَّا عَلَى زَوْجٍ فَإِنَّهَا تُحِدُّ عَلَيْهِ أَرْبَعَةَ أَشْهُرٍ وَعَشْرًا وَلَا تَلْبَسُ ثَوْبًا مَصْبُوغًا إِلَّا ثَوْبَ عَصْبٍ وَلَا تَكْتَحِلُ وَلَا تَمْتَشِطُ وَلَا تَمَسُّ طِيبًا إِلَّا عِنْدَ طُهْرِهَا حِينَ تَطْهُرُ نُبِذَ مِنْ قُسْطٍ وَأَظْفَارٍ»