The Signs of which Allah, the Most Holy, the Most High, has spoken in the Holy Quran are The Imams عليه السلام

3. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Muhammad Ibn Abi ‘Umayr or someone other than him from Muhammad ibn al-Fudayl from abu Hamzah who has that he said to abu Ja’far عليه السلام, “May Allah take my soul in service for your cause, the Shi‘a (your followers) ask about the meaning of the words of Allah, “Of what do they ask one another? (78:1). Do they ask about the great news?”The Imams عليه السلام said, “It depends up on my decision. I may tell them or may not tell them. Then he said: “I like, however, to tell you the meaning thereof.” I then asked what is the meaning of, “Of what do they ask one another?” The Imams عليه السلام said, “It means Amir al-Mu’minin عليه السلام. Amir al-Mu’minin عليه السلام used to say, “None of the signs of Allah, the Most Holy, the Most High, is bigger than I and none of the news of Allah is greater than I.”