Dietary Requirements
Some Hindu traditions, such as Vaishnavism, emphasize strict vegetarianism.The tenets of Sikhism do not advocate a particular stance on either vegetarianism or the consumption of meat, but rather leave the decision of diet to the individual. Sikhs who follow sects and groups that have a "Vashnavite" influence (AKJ, GNNSJ, 3HO, Namdhari's etc.) believe that there is to be strict vegetarianism while the majority, that follow the Official Sikh Code of Conduct (Rehat Maryada ) state the fact that, the only meat that is expressly forbidden for Sikhs to consume is Halal/Kosher (Kutha meat, the meat of animals slowly and ceremoniously killed in sacrificing rituals). Several Gurus such as Guru Hargobind Sahib and Guru Gobind Singh hunted frequently and consumed non-Halal. The Guru Granth Sahib states:
The Guru Granth Sahib —First Mehl:The fools argue about flesh and meat, but they know nothing about meditation and spiritual wisdom.
What is called meat, and what is called green vegetables? What leads to sin?
It was the habit of the gods to kill the rhinoceros, and make a feast of the burnt offering.
Those who renounce meat, and hold their noses when sitting near it, devour men at night.
They practice hypocrisy, and make a show before other people, but they do not understand anything about meditation or spiritual wisdom.
O Nanak, what can be said to the blind people? They cannot answer, or even understand what is said.
They alone are blind, who act blindly. They have no eyes in their hearts.
On the views that eating vegetation would be eating flesh, first Sikh Guru Nanak states:
AGGS, M 1, p 1290. —First Mehl:
ਪਾਂਡੇ ਤੂ ਜਾਣੈ ਹੀ ਨਾਹੀ ਕਿਥਹੁ ਮਾਸੁ ਉਪੰਨਾ ॥ ਤੋਇਅਹੁ ਅੰਨੁ ਕਮਾਦੁ ਕਪਾਹਾਂ ਤੋਇਅਹੁ ਤ੍ਰਿਭਵਣੁ ਗੰਨਾ ॥
O Pandit, you do not know where did flesh originate! It is water where life originated and it is water that sustains all life. It is water that produces grains, sugarcane, cotton and all forms of life.
On Vegetation, the Guru described it as living and experiencing pain:
Page 143 of the Sri Guru Granth Sahib Ji
—First Mehl:
Look, and see how the sugar-cane is cut down. After cutting away its branches, its feet are bound together into bundles,
and then, it is placed between the wooden rollers and crushed.
What punishment is inflicted upon it! Its juice is extracted and placed in the cauldron; as it is heated, it groans and cries out.
And then, the crushed cane is collected and burnt in the fire below.
- Page 143 Sri Guru Granth Sahib Ji
Read more about this topic: Hinduism And Sikhism, Differences, Differences Between Sikhism and Specific Hindu Traditions