स य एवमेतद्यज्ञायज्ञीयमङ्गेषु प्रोतवेदाङ्गी भवति नाङ्गेन विहूर्च्छति सर्वमायुरेति ज्योग्जीवति महान्प्रजया पशुभिर्भवति महान्कीर्त्या संवत्सर मज्ज्ञोनाश्नीयात्तद्व्रत मज्ज्ञो नाश्नीयादिति वा ॥
In plain words
Whoever thus knows the Yajñāyajñīya woven into the limbs becomes whole in his limbs and suffers no bodily affliction. He attains his full span of life, lives long, grows great in progeny, cattle, and renown. For a year he shall not eat marrow. That is the vow: he shall not eat marrow.
Close to the Sanskrit
He who knows thus the Yajñāyajñīya woven in the limbs becomes complete in limbs, does not limp by any limb, reaches the full lifespan, lives long, becomes great with offspring and cattle, becomes great in fame. For a year he should not eat marrow. That is the vow: he should not eat marrow, thus.