Naishkarmyasiddhi is a famous Advaita classic of Shri Sureshvaracharya, an immediate disciple of Adi Shankaracharya, and is said to be a manual embodying the quintessence of Vedanta. The work is held in such high esteem in the tradition of Advaita that it is quoted not only by every important Advaita writer but also by the critics of the Advaita philosophy. The author himself says that the work ‘purports to set forth the epitome of the essence of the entire Vedanta’. This book contains the original Sanskrit text, its English translation, and exhaustive notes.
Discriminate within yourself between the real and the unreal. Have you not read the Vedanta? Even when you sleep, keep the sword of discrimination at the head of your bed, so that covetousness cannot approach you even in dream. Practicing such strength, renunciation will gradually come, and then you will see the portals of heaven are wide open to you.
-Swami Vivekananda