It is stated in the Padma Purana: bhuyo-bhuyo drdha vani sryatam syata janah na bhoktavyam na bhoktavyam na bhoktavyam harer dine “O human beings, please listen, I tell you repeatedly with steadfast determination, please never eat any grains on the Day of Lord Hari (Ekadasi day, the Lord’s appearance day like Janmastami day etc.). Please never eat any food grains even by mistake on the Day of Lord Hari. Please do not eat grains on the Day of Lord Hari even if forced or compelled to do so.” The reason to not eat food grains on Ekadasi is stated in the Vrihan Naradiya Purana thus: yani kani ca papani brahma hatyadikani ca annam asritya tiathanti samprapte hari vasare “Every type of sin in this world, including the grievous sin of killing a Brahmana, reside in food grains on the Day of Lord Hari (Ekadasi and other fasting days). If grains are eaten on fasting days sins enter the body of that human being.” The Hari Bhakti Vilasa states: brahmacari grhastho va vanaprastho ‘thava yatih...