Ayesha reported,

During the illness in which he passed away, the Prophet ﷺ called Fatimah and whispered something to her, and she wept. Then he called her again and whispered something else to her, and she laughed. We asked her about that, and she said, "The Prophet ﷺ whispered to me that he would die from the illness he was suffering, so I wept. Then he whispered to me and informed me that I would be the first of his family to follow him, so I laughed."

عن عائشة قالت

دعا النبي ﷺ فاطمة رضي الله عنها في شكواه الذي قبض فيه، فسارها بشيء فبكت ثم دعاها فسارها بشيء فضحكت، فسألنا عن ذلك، فقالت: سارني النبي ﷺ أنه يقبض في وجعه الذي توفي فيه فبكيت، ثم سارني فأخبرني أني أول أهله يتبعه فضحكت.