The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 154

सरस्वती रजोरूपा तमोरूपा कलिन्दजा ।सत्त्वरूपा च गङ्गा च न यान्ति ब्रह्म निर्गुणम् ॥

In plain words

Sarasvatī is rajas. The Yamunā, born of Kalinda, is tamas. And the Gaṅgā is sattva. None of the three reaches Brahman, which has no guṇas at all.

Close to the Sanskrit

Sarasvatī is rajas-formed; tamas-formed is Kalinda-born (the Yamunā); and sattva-formed is Gaṅgā; and they do not reach Brahman, which is without attributes.