Sahih al-Bukhari 1279
Narrated Muhammad bin Seereen:
One of the sons of Um 'Atiyya died, and when it was the third day she asked for a yellow perfume and 
put it over her body, and said, "We were forbidden to mourn for more than three days except for our 
husbands."
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، حَدَّثَنَا سَلَمَةُ بْنُ عَلْقَمَةَ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ، قَالَ تُوُفِّيَ ابْنٌ لأُمِّ عَطِيَّةَ ـ رضى الله عنها ـ فَلَمَّا كَانَ الْيَوْمُ الثَّالِثُ دَعَتْ بِصُفْرَةٍ، فَتَمَسَّحَتْ بِهِ وَقَالَتْ نُهِينَا أَنْ نُحِدَّ أَكْثَرَ مِنْ ثَلاَثٍ إِلاَّ بِزَوْجٍ‏.‏