Skandapurana 1.4.12.59

1.4.12.59

asmadvākyena yo mukto jīvannapi mṛto hi saḥ..
śatruṃ ye ghnaṃti samare na te vīrāḥ prakīrtitāḥ.. 14.59 ..

He who is released on our word is indeed dead even while living. / Those who kill an enemy in battle are not proclaimed heroes;