▁thin ▁bu zz ing ▁sound ▁being ▁heard ▁in ▁right ▁ear , ▁and ▁upon ▁whom ▁med it ating , ▁a ▁person ▁att ains ▁the ▁" t ury a " ▁of ▁med itation ▁easily . ▁It ▁is ▁said ▁that ▁this ▁sound ▁has ▁its ▁source ▁in ▁the ▁An ah ata ▁Ch ak ra ( ▁the ▁fourth ▁Ch ak ra ▁in ▁v edic ▁termin ology ). ▁Other ▁relig ions ▁also ▁have ▁same ▁terms ▁for ▁it ▁like ▁" sh abad ", ▁" Word " ▁etc . ▁This ▁script ure ▁tells ▁how ▁to ▁listen ▁to ▁that ▁sound ▁so ▁that ▁to ▁att ain ▁a ▁deep ▁state ▁of ▁med itation . ▁ ▁History ▁The ▁relative ▁chron ology ▁of ▁the ▁text ▁is ▁placed ▁by ▁Mir ce a ▁El ia de ▁with ▁the ▁ancient ▁Y oga ▁Up an ish ads . ▁He ▁suggests ▁that ▁it ▁was ▁composed ▁in ▁the ▁same ▁period ▁when ▁the ▁following ▁texts ▁were ▁composed ▁– ▁M ait ri ▁Up an ish ad , ▁the ▁did actic ▁parts ▁of ▁the ▁Mah ab har ata , ▁the ▁chief ▁S anny asa ▁Up an ish ads ▁and ▁along ▁with ▁other ▁early ▁Y oga ▁Up an ish ads ▁such ▁as ▁Bra hm ab indu , ▁Bra hm avid ya , ▁Te job indu , ▁Y og at att va , ▁K sh ur ika , ▁Y og ash ik ha , ▁D hy an ab indu ▁and ▁Am rit ab indu . ▁These ▁and ▁the ▁Nad ab indu ▁text , ▁adds ▁El ia de , ▁were ▁composed ▁earlier ▁than ▁the ▁ten ▁or ▁eleven ▁later