All those princesses were lodged in different apartments, and the Lord simultaneously assumed different bodily expansions exactly matching each and every princess. He accepted their hands in perfect rituals by His internal potency.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
आसां मुहूर्त एकस्मिन्नानागारेषु योषिताम् । सविधं जगृहे पाणीननुरूपः स्वमायया
āsāṃ muhūrta ekasminnānāgāreṣu yoṣitām | savidhaṃ jagṛhe pāṇīnanurūpaḥ svamāyayā
SB 3.3.8