By Swami Harshananda
Advaita Vedānta describes a four-fold sādhana generally called as sādhanacatuṣṭaya. The third step, the śamādiṣaṭka includes samādhāna to be the last. It is concentration of mind on the object of contemplation. This word is also used to indicate a suitable or satisfactory reply given to a doubt or a query or an objection raised in philosophical disputations. In a more general sense, it means pacification of an aggrieved party.
- Sādhana means spiritual discipline.
- Śamādiṣaṭka means the group of six steps.
- The Concise Encyclopedia of Hinduism, Swami Harshananda, Ram Krishna Math, Bangalore