Hadith: Seek the Laylat al-Qadr in the odd nights of the last ten nights of Ramadan

عن عائشة أم المؤمنين رضي الله عنها أن رسولَ الله صلى الله عليه وسلم قال: «تَحَرَّوْا ليلة القَدْر في الوِتْرِ من الْعَشْرِ الأوَاخِرِ».
[صحيح] - [متفق عليه]

‘Ā'ishah, the Mother of the Believers, (may Allah be pleased with her) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said: "Seek Laylat al-Qadr in the odd nights of the last ten nights of Ramadan."
Sahih/Authentic. - [Al-Bukhari and Muslim]

Explanation

‘Ā'ishah, the Mother of the Believers, (may Allah be pleased with her) informed us that the Prophet (may Allah's peace and blessings be upon him) advised Muslims to seek Laylat al-Qadr by doing good deeds and observing the night prayer. This is the best way to seek it. One should seek it in the odd nights of the last ten nights of Ramadan.