Shiva Purana

siva.sh/siva-purana/uma-samhita/21/14

सर्वातिथ्यं त्रिवर्गस्य भूतेभ्यो दीयतामिति ।। गोब्राह्मणात्मनोऽर्थं हि संग्रामाभिहतो भवेत् ।। १४।।

sanskrit

Give all hospitality to the beings of the three worlds. For the sake of a cow or a brahmin he may be killed in battle.

english translation

sarvAtithyaM trivargasya bhUtebhyo dIyatAmiti || gobrAhmaNAtmano'rthaM hi saMgrAmAbhihato bhavet || 14||

hk transliteration by Sanscript