Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura says that people who are advanced in learning but attached to material enjoyment, who are puffed up by material possessions, by birth in an elevated aristocratic family or by education, may offer showbottle devotional service to the Deity and also offer prasādam to Vaiṣṇavas. Because of their ignorance, however, they cannot understand that since their minds are materially polluted, neither the Supreme Personality of Godhead, Lord Kṛṣṇa, nor the Vaiṣṇavas accept their offerings. If one accepts money from such materialistic persons to offer food to the Deity and Vaiṣṇavas, a pure Vaiṣṇava does not accept it. This causes unhappiness for the materialists because they are fully absorbed in the bodily conception of life. Therefore they sometimes turn against the Vaiṣṇavas.