Abdullah bin Abbas reported,

While Jibreel was sitting with the Prophet ﷺ, he heard a creaking sound from above him. He raised his head and said, "This is a gate of heaven that has been opened today, and it has never been opened before this day."An angel descended through it, and Jibreel said, "This is an angel who has come down to earth, and he has never come down before this day."The angel greeted him with peace and said, "Rejoice at two lights given to you, which were never given to any prophet before you. They are the opening of the Book and the closing verses of Surah al-Baqarah. You will not recite a single letter from them without being granted what you ask."

Azami 589

Sahih

عن ابن عباس قال

بينما جبريل قاعد عند النبي ﷺ سمع نقيضا من فوقه، فرفع رأسه فقال: هذا باب من السماء فتح اليوم لم يفتح قط إلا اليوم، فنزل منه ملك، فقال: هذا ملك نزل إلى الأرض لم ينزل قط إلا اليوم، فسلم وقال: أبشر بنورين أوتيتهما لم يؤتهما نبي قبلك فاتحة الكتاب، وخواتيم سورة البقرة لن تقرأ بحرف منهما إلا أعطيته.

الأعظمي 589صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Belief in the angels
Section
Angel descending with glad tidings while Jibreel was sitting with the Prophet ﷺ
Numbering
Jami al-Kamil 589 (2nd edition)
Azami 589