عَنِ الْأَسْوَدِ قَالَ ذَكَرُوا عِنْدَ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا أَنَّ عَلِيًّا كَانَ وَصِيًّا فَقَالَتْ مَتَى أَوْصَى إِلَيْهِ فَقَدْ كُنْتُ مُسْنِدَتَهُ إِلَى صَدْرِي أَوْ قَالَتْ فِي حِجْرِي فَدَعَا بِالطَّسْتِ فَلَقَدِ انْخَنَثَ فِي حِجْرِي وَمَا شَعَرْتُ أَنَّهُ مَاتَ فَمَتَى أَوْصَى إِلَيْهِ
It is narrated from Aswad that people mentioned before Sayyida Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) made a bequest in favor of Sayyiduna Ali (may Allah be pleased with him) (that he would be the caliph after the Prophet's passing). She said: At what time did the Prophet (peace and blessings be upon him) make a bequest in favor of Sayyiduna Ali (may Allah be pleased with him)? I was supporting the Prophet (peace and blessings be upon him) against my chest, or she said: I had the Prophet (peace and blessings be upon him) in my lap, he asked for a vessel of water, and his soul departed in my lap, and I did not even realize the moment of his passing. Now, when did the Prophet (peace and blessings be upon him) make a bequest in favor of Sayyiduna Ali (may Allah be pleased with him)?