Brihat Parashara Hora Shastra
रन्ध्रस्थानगते शुक्रे तदीशे सौरिराशिगे । द्वादशैकोनविंशाब्दे दारनाशं विनिर्दिशेत् ॥ ३८॥
If Śukr is in Randhr, while his dispositor is in a Rāśi of Śani, death of wife will take place during the native‟s 12th, or 21st year of age.
english translation
randhrasthAnagate zukre tadIze saurirAzige । dvAdazaikonaviMzAbde dAranAzaM vinirdizet ॥ 38॥
hk transliteration by Sanscript