Sahih al-Bukhari 5336
صحيح البخاري#5336Sahihقَالَتْ زَيْنَبُ وَسَمِعْتُ أُمَّ سَلَمَةَ، تَقُولُ جَاءَتِ امْرَأَةٌ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَتْ يَا رَسُولَ اللَّهِ إِنَّ ابْنَتِي تُوُفِّيَ عَنْهَا زَوْجُهَا وَقَدِ اشْتَكَتْ عَيْنَهَا أَفَتَكْحُلُهَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ ". مَرَّتَيْنِ أَوْ ثَلاَثًا كُلَّ ذَلِكَ يَقُولُ لاَ، ثُمَّ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّمَا هِيَ أَرْبَعَةُ أَشْهُرٍ وَعَشْرٌ، وَقَدْ كَانَتْ إِحْدَاكُنَّ فِي الْجَاهِلِيَّةِ تَرْمِي بِالْبَعَرَةِ عَلَى رَأْسِ الْحَوْلِ ".
Zainab further said:"I heard my mother, Um Salama saying that a woman came to Allah's Messenger (ﷺ) and said, "O Allah's Messenger (ﷺ)! The husband of my daughter has died and she is suffering from an eye disease, can she apply kohl to her eye?" Allah's Messenger (ﷺ) replied, "No," twice or thrice. (Every time she repeated her question) he said, "No." Then Allah's Messenger (ﷺ) added, "It is just a matter of four months and ten days. In the Pre-Islamic Period of ignorance a widow among you should throw a globe of dung when one year has elapsed
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 68:81