Talmud sur Les Nombres 34:13

HALAKHAH: “On condition that I possess a bet kor of arable land,” etc. Rebbi Ḥananiah the son of Rebbi Hillel asked¹¹³He asks against R. Ḥanaiah ben Gamliel.: If somebody said, my son A should perform action X and receive property Y, and the rest of my sons shall inherit my properties; if he performs, he takes, but if he does not perform, he does not take¹¹⁴This does not disinherit A from sharing with his brothers.. Or maybe it is a difference since it is written: “To give to Nine and a half tribes.¹¹⁵Num. 34:13. This verse clearly excludes the Transjordan tribes from property in Canaan. Therefore, R. Ḥanaiah ben Gamliel’s argument is correct.” It is as if he said, my son A should perform action X and receive property Y, and the rest of my sons shall inherit my properties; if he performs, he takes, but if he does not perform, he does not take from here or from there.