عَنْ عُبَادَةَ بْنِ الصَّامِتِ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ: ((لَيْلَةُ الْقَدْرِ فِي الْعَشْرِ الْبَوَاقِي مَنْ قَامَهُنَّ ابْتِغَاءَ حِسْبَتِهِنَّ، فَإِنَّ اللَّهَ تَبَارَكَ وَتَعَالَى يَغْفِرُ لَهُ مَا تَقَدَّمَ مِنْ ذَنْبِهِ وَمَا تَأَخَّرَ، وَهِيَ لَيْلَةُ وِتْرٍ تِسْعٍ، أَوْ سَبْعٍ أَوْ خَامِسَةٍ، أَوْ ثَالِثَةٍ، أَوْ آخِرِ لَيْلَةٍ))، وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((إِنَّ أَمَارَةَ لَيْلَةِ الْقَدْرِ أَنَّهَا صَافِيَةٌ بَلْجَةٌ، كَأَنَّ فِيهَا قَمَرًا سَاطِعًا، سَاكِنَةٌ سَاجِيَةٌ، لَا بَرْدَ فِيهَا وَلَا حَرَّ، وَلَا يَحِلُّ لِكَوْكَبٍ أَنْ يُرْمَى بِهِ فِيهَا حَتَّى تُصْبِحَ، وَإِنَّ أَمَارَتَهَا أَنَّ الشَّمْسَ صَبِيحَتَهَا تَخْرُجُ مُسْتَوِيَةً، لَيْسَ لَهَا شُعَاعٌ مِثْلَ الْقَمَرِ لَيْلَةَ الْبَدْرِ، وَلَا يَحِلُّ لِلشَّيْطَانِ أَنْ يَخْرُجَ مَعَهَا يَوْمَئِذٍ))
It is narrated from Sayyiduna Ubadah bin Samit (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: The Night of Qadr is in the last ten nights of Ramadan. Whoever stands (in prayer) during these ten nights seeking reward, Allah Almighty will forgive his past and future sins. This night will be on the odd nights, that is, the twenty-first, twenty-third, twenty-fifth, twenty-seventh, or twenty-ninth. Then the Messenger of Allah (peace and blessings be upon him) also said: The sign of the Night of Qadr is that it is a clear and bright night, as if the moon is shining in it, it is extremely peaceful, there is neither cold nor heat in it, no star is thrown (i.e., shooting star) until morning, and when the sun rises in the morning, it has no rays, it is like the full moon, and on that day, when it rises, Satan does not come before it.