The Prophet ﷺ came out to inform us about the Night of Qadr but two Muslims were quarreling with each other. So, the Prophet ﷺ said, "I came out to inform you about the Night of Qadr but such-and-such persons were quarreling, so the news about it had been taken away; yet that might be for your own good, so search for it on the 29th, 27th and 25th (of Ramadan).  

خَرَجَ النَّبِيُّ ﷺ لِيُخْبِرَنَا بِلَيْلَةِ الْقَدْرِ فَتَلاَحَى رَجُلاَنِ مِنَ الْمُسْلِمِينَ فَقَالَ خَرَجْتُ لأُخْبِرَكُمْ بِلَيْلَةِ الْقَدْرِ فَتَلاَحَى فُلاَنٌ وَفُلاَنٌ فَرُفِعَتْ وَعَسَى أَنْ يَكُونَ خَيْرًا لَكُمْ فَالْتَمِسُوهَا فِي التَّاسِعَةِ وَالسَّابِعَةِ وَالْخَامِسَةِ