The Sayings And Preaching of Al-Imam Ali (p.b.u.h)

Hadith n. 311

311. When Amir al-mu’minin, peace be upon him, came to Basrah he sent Anas ibn Malik to Talhah and az-Zubayr to make them recall what he (Anas) himself had heard the Messenger of Allah, peace be upon him and his descendants, say concerning them both, but he avoided doing so and when he came back to Amir al-mu’minin, he said that he had forgotten that matter. Thereupon, Amir al-mu’minin, peace be upon him, said: If you are speaking a lie Allah may afflict you with white spots (leucoderma) which even the turban may not cover.

As-Sayyid ar-Radi says: White spot means leucoderma. After sometime this disease did occur to Anas’s face so much so that he was never seen without a veil. 77

Hadith n. 312

312. Amir al-mu’minin, peace be upon him, said: Sometimes the hearts move forward and sometimes they move backward. When they move forward get them to perform the optionals (as well), but when they move backward keep them confined to obligatories only.

Hadith n. 313

313. Amir al-mu’minin, peace be upon him, said: The Qur’an contains news about the past, foretellings about the future and commandments for the present.

Source: https://www.al-islam.org/nahjul-balagha-part-2-letters-and-sayings