20-8 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Sa’ed ibn Abdullah quoted Ahmad ibn Muhammad ibn Isa, on the authority of Ali ibn al-Hikam, on the authority of Sayf ibn Umayrih, on the authority of Hisan ibn Mihran, “I asked Aba Abdullah as-Sadiq (MGB) about the Night of Power. The Imam (MGB) said, ‘Seek it on the nights of the twenty-first and the twenty-third of Ramazan.’”