Manava Dharmashastra 9.190

9.190

saṃsthitasyānapatyasya sagotrāt putram āharet
tatra yad rikthajātaṃ syāt tat tasmin pratipādayet //

(If the widow) of (a man) who died without leaving issue, raises up to him a son by a member of the family (Sagotra), she shall deliver to that (son) the whole property which belonged to the (deceased).