अस्मिन् कर्मणि if this act (my consecration), अप्रतिसंहृते if not withdrawn, तस्यापि for him also, सत्यं न his word has not come true, इति thus, मनस्तापः mental agony, भवेत् he will experience, तस्य his, तापः pain, माम् me, तपेच्च will torment.

If the preparations for the consecration are not withdrawn, my father will suffer mental agony for the fear that his word has not come true and his agony will torment me.