Bhashya
अथ पुनर्यस्य जायायै जारः उपपतिः स्यात्, तं चेत्द्विष्यान्, अभिचरिष्याम्येनमिति मन्येत, तस्येदं कर्म ।आ-मपात्रे अग्निमुपसमाधाय सर्वं प्रतिलोमं कुर्यात्; तस्मिन्अग्नौ एताः शरभृष्टीः शरेषीकाः प्रतिलोमाः सर्पिषाअक्ताः घृताभ्यक्ताः जुहुयात् 'मम समिद्धेऽहौषीः' इत्याद्याआहुतीः; अन्ते सर्वासाम् असाविति नामग्रहणं प्रत्येकम्;स एषः एवंवित्, यं ब्राह्मणः शपति, सः विसुकृतः विग-तपुण्यकर्मा प्रैति ।तस्मात् एवंवित् श्रोत्रियस्य दारेण नो-पहासामिच्छेत् नर्मापि न कुर्यात्, किमुत अधोपहासम्; हियस्मात् एवंविद्वपि तावन् परो भवति शत्रुर्भवतीत्यर्थः ॥
In plain words
Now suppose a man discovers his wife has a lover, and hates him for it, and decides: I will strike at him with sorcery. Here is the rite. He sets up a fire in an unbaked clay vessel and reverses everything about it — nothing done the usual way. Into that fire he throws roasted reed-arrow points, held backwards, smeared and anointed with ghee, one oblation after another, each one beginning 'into my kindled fire you poured' — and at the end of every single offering, he names the man himself. Whoever a Brāhmaṇa who understands this curses in that way leaves this world with his merit gone, his good deeds spent. That is why a man who understands this should never even trade a light joke with a scholar's wife, let alone anything further — because merely knowing how this works already makes him someone's enemy.
Close to the Sanskrit
Now again, if a man has a paramour, a rival lover, for his wife, and he should hate him, [thinking] 'I will work sorcery against him,' this is his rite: Having set up a fire in an unbaked vessel, he should do everything in reverse order; in that fire he should offer these — reed-arrow points roasted, arrow-reeds held reversed, smeared with ghee, anointed with clarified butter — as oblations beginning with the formula 'in my kindled [fire] you have offered'; at the end of each and every one, the naming of 'so-and-so.' This one — he who knows thus, whom a Brāhmaṇa curses — departs [from this world] devoid of merit, his righteous deeds gone. Therefore, one who knows thus should not desire dalliance with the wife of a Vedic scholar, should not even engage in playful banter — how much less low sport! — for, since even one who merely knows thus already becomes an adversary, [an enemy] — that is the meaning.