The Law Code of Bṛhaspati 1.26.96

1.26.96

mūrvaṃ mrtā hared agnim anvārūḍhā hared agham /
putrābhāve tu patnī syāt patnyabhāve tu sodaraḥ /
tadabhāve tu dāyādaḥ paścād dauhitrakaṃ dhanam //

A wife deceased before (her husband) takes away his consecrated fire (Agnihotra); but if the husband dies before the wife, she takes his property, if she has been faithful to him. This is an eternal law.