references?
Just observation.
However, this is one of the oldest shlokas that is said before meals.
Its called the Bhojan Mantra or Meal Prayer.
It is compiled from several sources.
Audio
Aum Yantu Nadayo Varshantu Parjanyaah
Supippalaa Oshadhayo Bhavantu
Annavataamodanavataa Maamikshavataam
Eshaam Raajaa Bhooyaasam
Odanamudbruvate Parameshttheevaa
Eshah Yadodanah
Paramaamevainam Shriyam gamayati [Yajurveda]
May rivers flow and clouds give rain. May medicinal plants flourish and all trees bear fruit. May I be the benefactor of the people producing the food like rice and milk products. The cooked food served on the plate is a gift from God whose consumption will lead to the highest level of prosperity and well being.
Maa Bhraataa Bhraataran Dwikshan
Maa Svasaaramutassvasaa
Samyanchah Savrataa Bhootvaa
Vaacham Vadata Bhadrayaa [Atharva Veda.]
Brother should not fight with brother, sisters should be kind. All should speak gently with each other and generate the attitude of truth, service and cooperation.
Brahmaarpanam Brahmahavir
Brahmaagnau Brahmanaa Hutam
Brahmaiva Tena Gantavyam
Brahma Karma Samaadhinaa [Bhagvad gita]
The items we use to feed ourselves are Brahman. The food itself is Brahman. The fire of hunger we feel is Brahman. We are Brahman and the process of eating and digesting the food is the action of Brahman. Finally, the result we obtain is Brahman.
Aum Saha Naavavatu
Saha Nau Bhunaktu
Saha Veeryam Karavaavahai
Tejasvinaa Vadheetamastu
Maa Vidvishaa VahaiAUM SHANTIH SHANTIH SHANTIH[Upanishads (Taittiriya, Katha, Shvetashvatara)]
Let us protect each other. Let us eat together. Let us work together. Let us study together to be bright and successful. Let us not hate each other.
For the meaning of Brahman, see here