The meaning of the saying of the Prophet, Allah’s blessings be upon him and his Family: «O Allah, have mercy upon my successors» thrice

1. We were told by my father, may Allah grant him mercy, that he said: We were told by Ali bin Ibrahim bin Hashim, from his father, from Hussain bin Yazid al-Nawfali, from Ali bin Dawud al-Ya’qoubi, from Isa bin Abduullah bin Muhammed bin Umar bin Ali bin Abi Talib, from his father, from his grandfather, from Ali bin Abi Talib, peace be upon them, that he said