As per Yoga and Vedanta, meditation is a mental process by which the meditator becomes one with the object of meditation and there are three stages of meditation. There are three stages in this mental process: Stage 1: Concentration or dharana - This is the first stage of meditation. - In this phase one has to have one-pointed focus on any fixed object, whether internal or external - One unit of concentration is equal to 12 seconds of continuous uninterrupted focus on such object - Concentration is the way to learn about a subject Stage 2: Meditation or dhyana - When concentration becomes effortless and continuous, it is known as meditation - Twelve units of concentration is known as Meditation - In other words, dhyana involves at least 2 and a half minutes of one pointed uninterrupted focus Stage 3: Total Absorption or samadhi - This is the culmination of the meditation process - Twelve units of Meditation is known as Samadhi - In other words, samadhi involves
ধর্মো রক্ষতি রক্ষিতঃ । धर्मो रक्षति रक्षितः ।