All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
We have not come across a narration which proves that this act is required on the wedding night. However, if the husband eats something with his wife on this night, this is permissible as it brings the hearts together. Nonetheless, if this act is based on a wrong belief, it is forbidden to do it.
For more benefit on the rights between spouses, please refer to Fatwa 83157, and to Fatwa 82908 on the etiquettes of intercourse with one's wife.