The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 535

भक्तानां स्वस्ति मङ्गलं ददातीति स्वस्तिदः ।तदेव करोतीति स्वस्तिकृत् ।मङ्गलस्वरूपमात्मीयं परमानन्दल-

In plain words

He hands his devotees svasti — safety, well-being, everything auspicious. That is why he is called Svastida, the giver of well-being. And he does not only hand it over; he brings it into being. That is why he is called Svastikṛt, the maker of well-being. Auspiciousness is not something he holds. It is what he is, his own, supreme bliss—

Close to the Sanskrit

He gives to devotees svasti, that is, auspiciousness — thus, Svastidaḥ. He does that very thing — thus, Svastikṛt. Whose own nature is auspiciousness, his own, [characterised by] supreme bliss—