Imam Ja'far as Sadiq (a.s.) says, that Fatemah (s.a.) remained alive for seventy-five days after the death of the Prophet of Allah (s.a.w.s.) and during this period none found her to be happy or smiling.
And every week she would go to the graves of the Martyrs of Uhud twice, once on Monday and once on Thursday. She would signal and say, "Here was the Prophet (s.a.w.s.) and here were the polytheists (during the battle)".
It is related that Fatemah (s.a.) would say her Prayers there and recite supplications and this continued until her death.
It is related from Mahmood bin Lubaid that when the Prophet of Allah (s.a.w.s.) passed away, Fatemah (s.a.) would come to thegrave of the Martyrs of Uhud and stand at the grave of Hamzah(a.s.) and weep. One day I went to the grave of Hamzah (a.s.) and found Fatemah (s.a.) weeping there. I left her alone until she had calmed down, then I went to her and saluted and said, "O Mistress of the womenfolk ! By Allah ! The cords of my heart break due to your lamentation and sorrow". She (s.a.) replied, "O Aba Umar ! It is befitting that I weep, for I have lost him who was the best of fathers, the Messenger of Allah (s.a.w.s.). Alas ! How I crave to have a glimpse of him"! Then she recited the following verses, "When someone dies his remembrance lessons day by day, but by Allah (s.w.t.), the remembrance of my father increases everyday ".