Zayd bin Aslam reported,

He reported from his father that the Messenger of Allah ﷺ was traveling on one of his journeys, with Umar bin Khattab 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 he did not answer. He asked a third time, and still he did not answer.So Umar bin Khattab said to himself, "May your mother be bereaved of you, Umar. You pressed the Messenger of Allah ﷺ three times, and each time he gave you no answer."Umar continued, "So I urged my camel on and moved ahead of the Muslims, fearing that something might be revealed about me in the Quran. It was not long before I heard someone calling out to me. I thought, 'I feared that something had been revealed about me in the Quran.'"He came to the Messenger of Allah ﷺ and greeted him, and the Prophet ﷺ 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].

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 يحبه رسول الله ﷺ ثم سأله فلم يجبه، ثم سأله فلم بجبه، فقال 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 صارحا 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} [الفتح: ١].