It was narrated that Anas bin Malik said:
“Ramadan began, and the Messenger of Allah ﷺ said: ‘This month has come to you, and in it there is a night that is better than a thousand months. Whoever is deprived of it is deprived of all goodness, and no one is deprived of its goodness except one who is truly deprived.’”

حَدَّثَنَا أَبُو بَدْرٍ، عَبَّادُ بْنُ الْوَلِيدِ حَدَّثَنَا مُحَمَّدُ بْنُ بِلاَلٍ، حَدَّثَنَا عِمْرَانُ الْقَطَّانُ، عَنْ قَتَادَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ دَخَلَ رَمَضَانُ فَقَالَ رَسُولُ اللَّهِ ـ ﷺ ـ " إِنَّ هَذَا الشَّهْرَ قَدْ حَضَرَكُمْ وَفِيهِ لَيْلَةٌ خَيْرٌ مِنْ أَلْفِ شَهْرٍ مَنْ حُرِمَهَا فَقَدْ حُرِمَ الْخَيْرَ كُلَّهُ وَلاَ يُحْرَمُ خَيْرَهَا إِلاَّ مَحْرُومٌ " .