قَالَتْ زَيْنَبُ وَسَمِعْتُ أُمِّي أُمَّ سَلَمَةَ، زَوْجَ النَّبِيِّ صلى الله عليه وسلم تَقُولُ جَاءَتِ امْرَأَةٌ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَتْ يَا رَسُولَ اللَّهِ إِنَّ ابْنَتِي تُوُفِّيَ عَنْهَا زَوْجُهَا وَقَدِ اشْتَكَتْ عَيْنَيْهَا أَفَتَكْحُلُهُمَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ ‏"‏ ‏.‏ مَرَّتَيْنِ أَوْ ثَلاَثًا كُلُّ ذَلِكَ يَقُولُ ‏"‏ لاَ ‏"‏ ثُمَّ قَالَ ‏"‏ إِنَّمَا هِيَ أَرْبَعَةُ أَشْهُرٍ وَعَشْرًا وَقَدْ كَانَتْ إِحْدَاكُنَّ فِي الْجَاهِلِيَّةِ تَرْمِي بِالْبَعْرَةِ عَلَى رَأْسِ الْحَوْلِ ‏"‏ ‏.‏ قَالَ حُمَيْدُ بْنُ نَافِعٍ فَقُلْتُ لِزَيْنَبَ وَمَا تَرْمِي بِالْبَعْرَةِ عَلَى رَأْسِ الْحَوْلِ فَقَالَتْ زَيْنَبُ كَانَتِ الْمَرْأَةُ إِذَا تُوُفِّيَ عَنْهَا زَوْجُهَا دَخَلَتْ حِفْشًا وَلَبِسَتْ شَرَّ ثِيَابِهَا وَلَمْ تَمَسَّ طِيبًا وَلاَ شَيْئًا حَتَّى تَمُرَّ بِهَا سَنَةٌ ثُمَّ تُؤْتَى بِدَابَّةٍ حِمَارٍ أَوْ شَاةٍ أَوْ طَيْرٍ فَتَفْتَضُّ بِهِ فَقَلَّمَا تَفْتَضُّ بِشَىْءٍ إِلاَّ مَاتَ ثُمَّ تَخْرُجُ فَتُعْطَى بَعْرَةً فَتَرْمِي بِهَا ثُمَّ تُرَاجِعُ بَعْدُ مَا شَاءَتْ مِنْ طِيبٍ أَوْ غَيْرِهِ ‏.‏

Zaynab said, "I heard my mother, Umm Salama, the wife of theProphet, may Allah bless him and grant him peace, say that a womancame to the Messenger of Allah, may Allah bless him and grant himpeace, and said, 'Messenger of Allah! My daughter's husband died, andher eyes are troubling her, can she put kohl on them?' The Messengerof Allah, may Allah bless him and grant him peace, said, 'No' two orthree times. Then he said, 'It is only four months and ten days. Inthe Jahiliyya, none of you threw away the piece of dung until a yearhad passed.' " Humayd ibn Nafi said, "I asked Zaynab toexplain what 'throwing away the piece of dung at the end of a year'meant. Zaynab said, 'In the Jahiliyya when a woman's husband died, shewent into a small tent and dressed in the worst of clothes. She didnot touch perfume or anything until a year had passed. Then she wasbrought an animal - a donkey, a sheep, or a bird, and she would breakher idda with it, by rubbing her body against it (taftaddu). Rarelydid she break her idda with anything (by rubbing herself against it)but that it died. Then she would come out and would be given a pieceof dung. She would throw it away and then return to whatever shewished of perfumes or whatever.' " Malik explained,'Taftaddu' means to wipe her skin with it in the same way as with ahealing charm." Translation Not Available

Book Ref: Muwatta Imam Malik Book 29 Hadith 1268
Web Ref:  Muwatta Imam Malik Book 29 Hadith 103