Astanga Hrudaya
पुत्रार्थं दक्षिणे सिञ्चेद्वामे दुहितृवाञ्छया। पयसा लक्ष्मणामूलं पुत्रोत्पादस्थितिप्रदम्॥४१॥
into her right nostril if she desires a son and into the left nostril, if she desires a daughter Juice of roots of Laksmana (Ipomoea marginata) prepared with milk, instilled into the nose or consumed by mouth
english translation