yāsyāmi bhavanaṁ brahmann
The members of the Yadu dynasty are eternal servants of the Lord; therefore Śrīla Jīva Gosvāmī has explained the word nāśaḥ, or “destruction,” as nigūḍhāyāṁ dvārakāyāṁ praveśanam ity arthaḥ: the members of the Yadu dynasty entered into the hidden or confidential Dvārakā in the spiritual world, which is not manifested here on the earth. In other words, Dvārakā, the Lord’s abode, is manifest on the earth, and when the earthly Dvārakā is apparently removed, the eternal Dvārakā in the spiritual world remains as it is. Since the members of the Yadu dynasty are eternal associates of the Lord, there is no question of their destruction. Only our conditioned vision of their manifestation was destroyed. This is the meaning of the word nāśaḥ.