Mahabharata 13.91.21

सोऽयं स्वयंभुविहितो धर्मः संकल्पितस्त्वयाऋते स्वयंभुवः कोऽन्यः श्राद्धेयं विधिमाहरेत्

so'yaṃ svayaṃbhuvihito dharmaḥ saṃkalpitastvayāṛte svayaṃbhuvaḥ ko'nyaḥ śrāddheyaṃ vidhimāharet

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