Lexically, the Arabic word `Tazkiyah' means purification and development—of anything—to the level of perfection. As a Quranic term, it expresses a way of ridding ourselves of flawed tendencies and leanings as well as providing one with the means to attain piety and to help our souls develop to become as perfect as humanly possible. In other words, the ultimate goal of Tazkiyah is for man to purify himself and prepare for his return back to his ‘original home’ and “final abode,” Paradise. Allah tells us in the Quraan: "By the soul and the proportion and order given to it; and its enlightenment as to its wrong and its right; truly he succeeds who purifies it and he fails who corrupts it!" [91:7-10]
These verses present a straightforward outline of Islam's notion of Tazkiyah. Allah has so created the soul that it has both inclinations—good and evil—and man has been endowed with the power to distinguish between the two. Therefore, the path of success for man, in this life and the one to come, involves choosing the side of good and striving to make it prevail—not just in the world and his surroundings, but first and as a pre-requisite for societal and environmental reform, within himself.
In this sense, the need for Tazkiyah is part of our innate nature—it is hardwired into our consciousness. Hence, man has always known and attempted to fulfill this innate need by seeking out all ways of contemplation, meditation, and worship. Yet, only the ways provided to him by the Creator, through the various revelations, have worked for him, and these revealed ways of self-reflection and change are the only ways of self-purification that can work for him. Moreover, they have worked only so long as man managed to keep these ways themselves pure and clean—something man has not always had success at doing.
Muslims are not exempt from this failure to keep the means purified. Like others, we have suffered at times from maintaining authentic and unadulterated ways of Tazkiyah. This is true for both Muslims of the past and Muslims today. Many of us have allowed ourselves to modify or deviate from the authentic modes of Tazkiyah delivered to us through revelation—in the Quraan and Sunnah. Part of the reason for this is definitely the increasing strain of outside influences, but this is not its main cause.
The primary source of our inconstancy is a basic and widespread lack of proper understanding of the Quraan and the Sunnah.
This is unfortunate because Allah says: "We have sent you a Messenger, from yourselves (Muhammad), reciting to you Our verses and purifying you (through tazkiyah) and teaching you the Book (Quraan) and wisdom (Sunnah) and teaching you that which you knew not." [2:151], and the Prophet (saws) himself said: "I have left you upon a clear proof." [Ahmad]



