Bismillahir Rahmanir RahimAssalamu Alaikum, dear brothers, sisters and friends. "Self-purification" is famous as the book written by Khalid Ibn Abdullah Al-Muslih. Self-purification: An important issue. Mans outward behavior depends on the purity of his soul. If the soul is not pure, the human period cannot be pure. What the Prophet (peace and blessings of Allaah be upon him) brought is greater and more glorious is the provision of correction and purification of the heart. This subject has been discussed in the book. All the pages of this book are highlighted in this app. I published the whole book for free for those Muslim brothers who could not afford it.Hopefully you will encourage us with your valuable comments and ratings.