Mahabharata 1.158.21

अनिवार्यमसंबाधं तव वाचा कथं वयम्न स्पृशेम यथाकामं पुण्यं भागीरथीजलम्

anivāryamasaṃbādhaṃ tava vācā kathaṃ vayamna spṛśema yathākāmaṃ puṇyaṃ bhāgīrathījalam

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