A stall will be set up by an organisation 'Dadhichi Dehdaan Samiti' at the Bihar Veterinary College ground, where Modi's elder son Utkarsh will tie the knot, the Deputy CM's Personal Secretary Shailendra Kumar Ojha said.
Banners and pamphlets urging people to donate their eyes, other organs and body would be there at the stall.
Forms pledging donation of organs or the body will also be provided to willing people, Ojha said.
Chief Minister Nitish Kumar has launched a campaign against child marriage and dowry on October 2 last.