Manusmriti

siva.sh/manusmriti/8/197

विक्रीणीते परस्य स्वं योऽस्वामी स्वाम्यसंमतः । न तं नयेत साक्ष्यं तु स्तेनमस्तेनमानिनम् ॥ १९७ ॥

sanskrit

If anybody sells the property of another man, without being the owner and without the assent of the owner, the (judge) shall not admit him who is a thief, though he may not consider himself as a thief, as a witness (in any case).

english translation

vikrINIte parasya svaM yo'svAmI svAmyasaMmataH | na taM nayeta sAkSyaM tu stenamastenamAninam || 197 ||

hk transliteration by Sanscript