koṭiśo hy aṇḍa-rāśayaḥ

dasa-uttara-adhikaih-with ten times greater thickness; yatra-in which; pravistah-entered; paramanuvat-like atoms; laksyate-it (mass of universes) appears; antah-gatah-come together; ca-and; anye-in the other; kotisah-clustered; hi-for; anda-rasayah-huge combination of universes.