4-4 Abul Hussein Muhammad ibn Ali ibn ash-Shah narrated that Abu Hamid Ahmad ibn al-Hussein quoted Abu Yazid Ahmad ibn Khalid al-Khalidy, on the authority of Muhammad ibn Ahmad ibn Salih al-Tamimy, on the authority of his father, on the authority of Anas ibn Muhammad Abu Malik, on the authority of his father, on the authority of Ja’far ibn Muhammad as-Sadiq (MGB), on the authority of his father (MGB), on the authority of his grandfather (MGB), on the authority of Ali ibn Abi Talib (MGB) that in his will to Ali God’s Prophet (MGB) said,

“O Ali, the prayers of four classes of people are never unanswered: just rulers, fathers when they pray for their sons, people who privately pray for their brethren, and the oppressed. The Majestic the Glorified God says, ‘I swear by My Glory and Majesty that I will take your revenge (referring to the oppressed) when proper.’”