It is an important commentary on the noble hadith of the Prophet (peace and blessings be upon him) that was recorded in the collection of Sunan Tirmidhi relating the dispute among the chief angels of the Highest Heaven . The dispute arose about deeds that expiate sin and raise a person's rank in the Hereafter. . The Prophet (peace be upon him) said of this hadith, "Indeed, it is the truth, so study and learn it" . Therefore, it is necessary for every person to take extra keen interest in learning its lessons, understanding its values and applying its highly prized recommendations.