Mahabharata 13.26.34

गङ्गायमुनयोस्तीर्थे तथा कालंजरे गिरौषष्टिह्रद उपस्पृश्य दानं नान्यद्विशिष्यते

gaṅgāyamunayostīrthe tathā kālaṃjare girauṣaṣṭihrada upaspṛśya dānaṃ nānyadviśiṣyate

Our plain-language meaning of this verse is waiting for scholar review.