كتاب الفضائل
Read the English translation first, with the original Arabic directly underneath.
'Aishah (May Allah be pleased with her) reported:
The Messenger of Allah (ﷺ) used to seclude himself (in the mosque) during the last ten nights of Ramadan. He would say, "Search for Lailat-ul-Qadr (Night of Decree) in the last ten nights of Ramadan." <b>[Al-Bukhari and Muslim]</b>.
تحروا ليلة القدر في العشر الأواخر من رمضان