Mahabharata 7.56.18

अर्जुनेन प्रतिज्ञातमार्तेन हतबन्धुनाजयद्रथं हनिष्यामि श्वोभूत इति दारुक

arjunena pratijñātamārtena hatabandhunājayadrathaṃ haniṣyāmi śvobhūta iti dāruka

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