That Brahmana who has been once induced to accept the gift of food in a Shraddha at the very beginning, as also he who has married a Shudra wife, even if gifted with every sort of knowledge, should not be invited.
अग्रणीर्यः कृतः पूर्वं वर्णावरपरिग्रहः। ब्राह्मणः सर्वविद्योऽपि राजन् नार्हति केतनम्॥