Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
suyuti:2-3054bʿUmar > Qāl Rasūl Allāh Ṣlá
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السيوطي:٢-٣٠٥٤b

"عَنْ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ ﷺ في لَيْلَةِ الْقَدْرِ: الْتَمِسُوهَا في الْعَشْرِ الأَوَاخِرِ".  

ابن أَبى عاصم في الاعتكاف

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Collected by Mālik
malik:19-12Ziyād > Mālik > Hishām b. ʿUrwah from his father

Ziyad related to me from Malik from Hisham ibn Urwa from his father that the Messenger of Allah ﷺ said, "Search for Laylat al-Qadr in the last ten days of Ramadan."  

مالك:١٩-١٢وَحَدَّثَنِي زِيَادٌ عَنْ مَالِكٍ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ تَحَرَّوْا لَيْلَةَ الْقَدْرِ فِي الْعَشْرِ الأَوَاخِرِ مِنْ رَمَضَانَ