tasya — he evam — thus yuṣjataḥ — while fixing cittam — his mind mahā-yogena — by powerful practice of yoga yoginaḥ — the mystic sage vyatīyāya — passed by mahān — a great kālaḥ — period of time manu-antara — lifetimes of Manu ṣaṭ — six ātmakaḥ — consisting of.