The Kitáb-i-Aqdas - The Most Holy Book
Index term: plunging into food, under Hand(s)
k46.
Whoso wisheth to make use of vessels of silver and gold is at liberty to do so. Take heed lest, when partaking of food, ye plunge your hands into the contents of bowls and platters. Adopt ye such usages as are most in keeping with refinement. He, verily, desireth to see in you the manners of the inmates of Paradise in His mighty and most sublime Kingdom. Hold ye fast unto refinement under all conditions, that your eyes may be preserved from beholding what is repugnant both to your own selves and to the dwellers of Paradise. Should anyone depart therefrom, his deed shall at that moment be rendered vain; yet should he have good reason, God will excuse him. He, in truth, is the Gracious, the Most Bountiful.
n73.
Take heed lest, when partaking of food, ye plunge your hands into the contents of bowls and platters.
This prohibition was defined by Shoghi Effendi as "plunging one's hand in food". In many parts of the world it has been customary to eat with the hands from a communal bowl.