Ubada bin Samit reported,

The Messenger of Allah ﷺ came out to inform the people about Laylat al-Qadr, but two men from the Muslims were quarreling. He said, "I came out to inform you about Laylat al-Qadr, but so-and-so and so-and-so were quarreling, so it was taken away. Perhaps that is better for you. Seek it in the seventh, the ninth, and the fifth."

Bukhari 49

Sahih

أخبرنا قتيبة بن سعيد حدثنا إسماعيل بن جعفر عن حميد حدثني أنس بن مالك قال

أخبرني عبادة بن الصامت

أن رسول الله ﷺ خرج يخبر بليلة القدر فتلاحى رجلان من المسلمين فقال إني خرجت لأخبركم بليلة القدر وإنه تلاحى فلان وفلان فرفعت وعسى أن يكون خيرا لكم التمسوها في السبع والتسع والخمس

البخاري 49صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Faith
Chapter
Fear of the believer that his deeds may be nullified while he is unaware
Numbering
Darussalam 49
Bukhari 49