Dattatreyayogashastra
The Dattātreyayogaśāstra, (Sanskrit: दत्तात्रेययोगशास्त्र) a Vaisnava text probably composed in the 13th century CE, is the earliest text which provides a systematized form of Haṭha yoga under that name,[1] and the earliest to place its yoga techniques under the name Haṭha.Laya yoga dissolves the mind by methods such as raising Kundalini, though neither this nor the chakras are named in the text.[3] The work teaches an eightfold yoga identical with Patañjali's 8 limbs (aṣṭāṅgayoga) that it attributes to Yajnavalkya and others, and as an alternative, ten exercises, later called mudras, that it attributes to teachers including Kapila.[7] The Dattātreyayogaśāstra teaches mahāmudrā, mahābandha, khecarīmudrā, jālandharabandha, uḍḍiyāṇabandha, mūlabandha, viparītakaraṇī, vajrolī, amarolī, and sahajolī.The goal was to halt, or to put into reverse, the movement of the vital fluid bindu.