Sayyidah Aishah (may Allah be pleased with her) said: The Messenger of Allah (peace and blessings be upon him) called Sayyidah Fatimah (may Allah be pleased with her) during his illness and whispered to her, and she wept; then he whispered to her and she laughed. I asked her about that: What did you see, that he (peace and blessings be upon him) whispered to you and you wept, then whispered to you and you laughed? She said: "The Messenger of Allah (peace and blessings be upon him) told me of his death, so I wept; then he told me that I would be the first of his family to follow him (to join him), so I laughed."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19240