Aslam bin Thalaba reported,

The Messenger of Allah ﷺ was traveling on one of his journeys, and Umar bin Khattab was riding alongside him at night. Umar bin Khattab asked him about something, but the Messenger of Allah ﷺ did not answer him. He asked again, and still received no answer. He asked a third time, and again there was no response.Umar bin Khattab said to himself, "May your mother lose you, Umar! You pressed the Messenger of Allah ﷺ three times, and each time he did not answer you."Umar said, "So I urged my camel forward and moved ahead of the Muslims, fearing that something might be revealed in the Quran concerning me. It was not long before I heard someone calling out to me."He continued, "I said to myself, 'I feared that something had been revealed in the Quran about me.' I came to the Messenger of Allah ﷺ and greeted him, and he said, 'A surah has been revealed to me tonight that is dearer to me than anything the sun has risen upon.'"Then he recited, "Indeed, We have granted you a clear victory" [Fath 48:1].

Bukhari 4177

Sahih

حدثني عبد الله بن يوسف أخبرنا مالك

عن زيد بن أسلم عن أبيه

أن رسول الله ﷺ كان يسير في بعض أسفاره وعمر بن الخطاب يسير معه ليلا فسأله عمر بن الخطاب عن شيء فلم يجبه رسول الله ﷺ ثم سأله فلم يجبه ثم سأله فلم يجبه وقال عمر بن الخطاب ثكلتك أمك يا عمر نزرت رسول الله ﷺ ثلاث مرات كل ذلك لا يجيبك قال عمر فحركت بعيري ثم تقدمت أمام المسلمين وخشيت أن ينزل في قرآن فما نشبت أن سمعت صارخا يصرخ بي قال فقلت لقد خشيت أن يكون نزل في قرآن وجئت رسول الله ﷺ فسلمت عليه فقال لقد أنزلت علي الليلة سورة لهي أحب إلي مما طلعت عليه الشمس ثم قرأ {إنا فتحنا لك فتحا مبينا}

البخاري 4177صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Expeditions
Chapter
Expedition of Hudaybiya
Numbering
Darussalam 4177
Bukhari 4177