काकुत्स्थ O Kakutstha, राघव Rama, जातस्य of one who is born, पुरुषस्य for a person, आचार्यश्चैव the preceptor, पिता the father, माता च the mother, त्रयः three, गुरवः भवन्ति become gurus.
Every man born has three preceptors. They are his teacher, father and mother.