Bava Batra

In  his ingenuity he did not consider it  carefully. Rami b. Hama inquired: [Regarding the claims of] the father of his  father and his  brother as, for example. [the claims of] Abraham and Jacob upon the possessions of Esau, who takes precedence? — Raba said: Come and hear! A FATHER TAKES PRECEDENCE OVER ALL HIS DESCENDANTS.  And Rami h. Hama?  — [A father might take precedence over] HIS DESCENDANTS but not [necessarily over] the descendants of his son.  Logical reasoning [leads to] the same [conclusion]; for it is stated, THIS IS THE GENERAL RULE: THE LINEAL DESCENDANTS OF ANY ONE WITH A PRIORITY TO SUCCESSION TAKE PRECEDENCE. If, [then,] Isaac  had been [alive], Isaac would have taken precedence.  now, also, that Isaac [himself] is not [alive], Jacob  [should] take precedence. MISHNAH. THE DAUGHTERS OF ZELOPHEHAD  TOOK THREE SHARES IN THE INHERITANCE [OF CANAAN]:  THE SHARE OF THEIR FATHER WHO WAS OF THOSE WHO CAME OUT OF EGYPT,  AND HIS SHARE AMONG HIS BROTHERS IN THE POSSESSIONS OF HEPHER,  [WHICH CONSISTED OF TWO], SINCE HE  WAS A FIRSTBORN SON [WHO] TAKES TWO SHARES.