According to the Skanda Purana, even showing respect to cows can help eradicate our sinful acts.
By maintaining and serving cows with love and care, we not only catch the attention of Lord Krishna but also please Him. Krishna is especially delighted by any effort made to serve cows, and He never forgets those who benefit cows.
In practical terms, making Daan for cows involves providing them with food, shelter, and medical care. By feeding cows grains and offering them puja, we receive extraordinary spiritual benefits. Additionally, the presence of cows in our surroundings is believed to remove negative energies and bring positive energy.