Shiva Purana
रविसोमाग्निसंयोगाद्यदोद्योतं न पश्यति ॥ कृष्णं सर्वं समस्तं च षण्मासं जीवितं तथा ॥ १२ ॥
When in contact with the light of the sun, moon or fire if a man does not see the brilliant lustre, if he sees everything black he will remain alive only for six months more.
english translation
ravisomAgnisaMyogAdyadodyotaM na pazyati ॥ kRSNaM sarvaM samastaM ca SaNmAsaM jIvitaM tathA ॥ 12 ॥
hk transliteration by Sanscript