Answer

In Jain usage, dwidal means pulses/legumes — grains that split into dal and do not yield oil. Jain texts describe it as food such as lentils, gram, and similar pulses. ( jainworld.jainworld.com)

Explanation

In Jain dietary practice, dwidal tyag means avoiding pulses when they are mixed with raw milk, raw curd, or buttermilk. This combination is treated as prohibited food in Jain guidelines, and some Jain community food rules also list Dwi-Dal items as excluded. ( jainworld.jainworld.com)

Spiritual Understanding

The reason is rooted in ahimsa: Jain tradition treats such food combinations as causing harm to subtle living beings and therefore considers them unsuitable for a disciplined Jain diet. ( jainworld.jainworld.com)

Takeaway

So, simply put: dwidal = pulses/legumes, and in Jain practice it is often avoided in certain food combinations, especially with uncooked dairy. ( jainworld.jainworld.com)