According to Ayurveda, Ruksha guna of Vayu (dry quality of Vata dosha) along with dushta shonita (impure or vitiated blood) is a specific cause (hetu) for Putraghni (a condition that leads to infertility or difficulties in conception).
- Mahayonivyapad refers to conditions that affect the uterus but is not specifically associated with the dry quality of Vata or impure blood.
- Vataj yonivyapad refers to disorders caused by vitiated Vata dosha in the reproductive system, but it is not directly linked to the dry quality of Vata and impure blood together.
- Putraghni is specifically related to infertility caused by a combination of dry Vata and vitiated blood, which affects the ability to conceive.
- Vamini refers to conditions affecting women, especially related to menstrual issues, but not specifically to the combination mentioned in the question.
Thus, the correct answer is (3) Putraghni.