حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ أَخْبَرَنَا أَيُّوبُ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الْتَمِسُوهَا فِي الْعَشْرِ الْأَوَاخِرِ فِي تَاسِعَةٍ تَبْقَى أَوْ خَامِسَةٍ تَبْقَى أَوْ سَابِعَةٍ تَبْقَى
مسند امام احمد بن حنبل · Hadith 2052
It was narrated that Ibn 'Abbas said: The Messenger of Allah (PBUH) said: "Seek it [Lailatal- Qadr] in the last ten days, on the twenty- ninth or the twenty-fifth or the twenty-seventh’’.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020