Manusmriti

siva.sh/manusmriti/8/104

शूद्रविड् क्षत्रविप्राणां यत्रऋतोक्तौ भवेद् वधः । तत्र वक्तव्यमनृतं तद् हि सत्याद् विशिष्यते ॥ १०४ ॥

sanskrit

Whenever the death of a Sudra, of a Vaisya, of a Kshatriya, or of a Brahmana would be (caused) by a declaration of the truth, a falsehood may be spoken; for such (falsehood) is preferable to the truth.

english translation

zUdraviD kSatraviprANAM yatraRtoktau bhaved vadhaH | tatra vaktavyamanRtaM tad hi satyAd viziSyate || 104 ||

hk transliteration by Sanscript