One verse

Srimad Bhagavatam 1.7.37

1.7.37

स्वप्राणान् य: परप्राणै: प्रपुष्णात्यघृण: खल: । तद्वधस्तस्य हि श्रेयो यद्दोषाद्यात्यध: पुमान् ॥ ३७ ॥

sva-pranan yah para-pranaih prapusnaty aghrnah khalah tad-vadhas tasya hi sreyo yad-dosad yaty adhah puman

sva-pranan
one’s own life
yah
one who
para-pranaih
at the cost of others’ lives
prapusnati
maintains properly
aghrnah
shameless
khalah
wretched
tat-vadhah
killing of him
tasya
his
hi
certainly
sreyah
well-being
yat
by which
dosat
by the fault
yati
goes
adhah
downwards
puman
a person.

A cruel and wretched person who maintains his existence at the cost of others’ lives deserves to be killed for his own well-being, otherwise he will go down by his own actions.