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## First Karma Granth, Chapter 25
**Eeha:** When doubt arises about the nature of something, like whether a touch was from a rope or a snake, we engage in **Eeha**, which is a process of reasoning and considering possibilities. For example, "If it were a snake, it would have hissed when touched." Eeha lasts for an **Antarmuhurta** (a very short period of time).
**Avaya:** The definite knowledge gained through Eeha is called **Avaya**. For example, "The touch was definitely from a rope, not a snake." Avaya also lasts for an **Antarmuhurta**.
**Dharana:** The firm knowledge that prevents forgetting the object known through Avaya is called **Dharana**. It is the knowledge that retains the memory of the object known through Avaya, even after a long time. Dharana can last for a **countable or uncountable number of years**.
**Explanation:** The certainty of Avaya may fade with time as the mind shifts to other objects. However, it leaves a **Samskara** (impression) that allows for the recollection of the object when a suitable opportunity arises. This continuous flow of certainty, the resulting Samskara, and the memory arising from the Samskara, all constitute the **Dharana** process.
**Note:** All four types of knowledge (Arthaavagraha, etc.) are forms of **Matijnana** (knowledge through the mind). They are acquired through the five senses and the mind, and therefore have five **r** (characteristics).
**Reference:** Navisutra 34: "Eeha lasts for an Antarmuhurta, Avaya for an Antarmuhurta, and Dharana for a countable or uncountable number of years."