Hadith 778
Abdullah bin Abbas (may Allah be pleased with them both) narrates: "Once, Gabriel was sitting with the Prophet Muhammad (peace be upon him). During this, he heard the sound of a door opening above (in the sky). He raised his head and said: Today, such a door of the sky has opened which has never opened before. Then an angel came to them and said to the Prophet Muhammad (peace be upon him): Accept the glad tidings of two such Surahs which have not been given to any prophet before you; they are Surah Al-Fatihah and the last verses of Surah Al-Baqarah. Whatever letter of them you recite, you will be granted that thing."