Epistle to the Son of the Wolf — Paragraph 116
Source (Persian)
قسم بافتاب برهان که از افق سماء ايقان اشراق نموده اين مظلوم در ليالی و ايّام بتهذيب نفوس مشغول تا انکه نور دانائی بر تاريکی نادانی غلبه نمود *
Translation
I swear by the Day-Star of God's Testimony that hath shone from the horizon of certitude! This Wronged One, in the day-time and in the night-season, occupied Himself with that which would edify the souls of men, until the light of knowledge prevailed over the darkness of ignorance.