Mahabharata 13.77.24

13.77.24

evaṃ rātrau divā caiva sameṣu viṣameṣu ca |
mahābhayeṣu ca naraḥ kīrtayanmucyate bhayāt || 24 ||

I always look at kine. Let kine always look at me. Kine are ours. We are theirs. Ourselves are there where kine are!--Even thus, at night or day, in happiness or woe, verily, at times of even great fear,--should a man exclaim. By uttering such words he is certain to become freed from every fear.'"