Sahih Muslim Book - 18, Hadith - 3727

قَالَتْ زَيْنَبُ سَمِعْتُ أُمِّى أُمَّ سَلَمَةَ تَقُولُ جَاءَتِ امْرَأَةٌ إِلَى رَسُولِ اللَّهِ -صلى الله عليه وسلم- فَقَالَتْ يَا رَسُولَ اللَّهِ إِنَّ ابْنَتِى تُوُفِّىَ عَنْهَا زَوْجُهَا وَقَدِ اشْتَكَتْ عَيْنُهَا أَفَنَكْحُلُهَا فَقَالَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- « لاَ ». مَرَّتَيْنِ أَوْ ثَلاَثًا كُلَّ ذَلِكَ يَقُولُ لاَ ثُمَّ قَالَ « إِنَّمَا هِىَ أَرْبَعَةُ أَشْهُرٍ وَعَشْرٌ وَقَدْ كَانَتْ إِحْدَاكُنَّ فِى الْجَاهِلِيَّةِ تَرْمِى بِالْبَعَرَةِ عَلَى رَأْسِ الْحَوْلِ ».

Zainab said: "I heard my mother Umm Salamah say: A woman came to the Messenger of Allah (s.a.w) and said: "O Messenger of Allah, my daughter's husband has died, and she has trouble in her eye; can we apply kohl for her?" The Messenger of Allah (s.a.w) said: "No," two or three times, then he said: "It is only four months and ten days. During the Jahiliyyah one of you would throw a piece of dung at the end of one year."