Rabbi Aharon Roth: Holiness From Not Wasting Seed

By not wasting seed a person can reach the level of Ruach HaKodesh. Rabbi Yaron Reuven tells a story about Rabbi Aharon Roth, author of Taharat HaKodesh, and the intense holiness he attained from not wasting seed. One Shabbat, a heretic author tried to collect information to embarrass the holy Rebbe but instead he got a surprise he would never forget. When they met, he showed him an image of Gehinnom just by shaking his hand.