Fasting on Ekādaśī day
Srila Prabhupada says -
One should observe fasting on Ekādaśī day this occurs on the eleventh day after the full moon and the eleventh day after the new moon. On such days no grains, cereals or beans are eaten; simply vegetables and milk are moderately taken, and chanting Hare Kṛṣṇa and reading scriptures are increased.
