Seek the Night of Power (Laylatul Qadr)

Allah’s Prophet (Sallallaahu `alayhi wa sallam) said,

“Seek it in Ramadan in the last ten nights. For verily, it is during the odd nights, the twenty-first, or the twenty-third, or the twenty-fifth, or the twenty-seventh, or the twenty-ninth, or during the last night”

Sahih Hadith Ahmad 5:318