Mahabharata 3.139.9

सोऽस्मदर्थे व्रतं साधु चर त्वं ब्रह्महिंसनम्समर्थो ह्यहमेकाकी कर्म कर्तुमिदं मुने

so'smadarthe vrataṃ sādhu cara tvaṃ brahmahiṃsanamsamartho hyahamekākī karma kartumidaṃ mune

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