Sāmāyika is the vow of periodic concentration observed by the Jains. It is one of the essential duties prescribed for both the Śrāvaka and ascetics. The preposition sam means one state of being. To become one is samaya. That, which has oneness as its object, is sāmāyikam. Sāmāyika is aimed at developing equanimity and to refrain from injury. On the third pratimā the householder resolves to observe the sāmāyika vow three times a day. According to the Jain text, Purushartha Siddhyupaya: Sāmāyika is also one of the five kinds of conduct other kinds being reinitiation, purity of non-injury, slight passion and perfect conduct. It is of two kinds — with and without time limit.
Duration
The sāmāyika is performed for an antara-muhurta every day. Champat Rai Jain in his book The Key of Knowledge writes:
Procedure
In performing sāmāyika, the śrāvaka has to stand facing north or east and bow to the Pañca-Parameṣṭhi. He then sit down and recites the Namokara mantra a certain number of times, and finally devotes himself to holy meditation. This consists in:
pratikramana, recounting the sins committed and repenting for them,
pratyākhyanā, resolving to avoid particular sins in future,
sāmāyika karma, renunciation of personal attachments, and the cultivation of a feeling of regarding every body and thing alike,
stuti, praising the four and twenty Tīrthankaras,
vandanā, devotion to a particular Tirthankara, and
kāyotsarga, withdrawal of attention from the body and becoming absorbed in the contemplation of the spiritual Self.
According to Jain text, Puruşārthasiddhyupāya: For the sake of strengthening the performance of daily meditation, one must undertake fasting twice each lunar fortnight.
Posture
The posture for sāmāyika may be either —
padma āsana, the sitting posture, with inter-locked legs, the hands placed in the lap with the palms facing upwards, and with attention fixed on the foremost point of the nose;
khadga āsana, the standing posture, with feet at a distance of about two inches from each other, the hands resting naturally by the sides, but not so as to touch the body; and attention fixed on the point of the nose as in the padma āsana; or
ardha padma āsana or the semi-padma posture, which differs from the padma in respect of the position of the left leg, which is placed under the right thigh.
Great vows
The householders, due to the absence of all sinful activities during the period of meditation, observe great vows, although the conduct-deluding karmas remain in operation. According to Achārya Pujyapada's Sarvārthasiddhi:
Transgressions
Jain texts list down five transgressions of the vow of sāmāyika. These are- Misdirected activity of the speech, mind, and body, lack of earnestness, and absent mindedness. In performing the samayika meditation the following points are prescribed for the monk:
he should not perform it disrespectfully,
nor filled with pride of learning,
nor to be considered pious by his fellow-men,
nor in a manner to cause disturbance to any other living being,