וְהָיָ֗ה בְּיוֹם֙ הַנְחִיל֣וֹ אֶת־בָּנָ֔יו אֵ֥ת אֲשֶׁר־יִהְיֶ֖ה ל֑וֹ לֹ֣א יוּכַ֗ל לְבַכֵּר֙ אֶת־בֶּן־הָ֣אֲהוּבָ֔ה עַל־פְּנֵ֥י בֶן־הַשְּׂנוּאָ֖ה הַבְּכֹֽר׃
тогда в тот день, когда он заставит своих сыновей унаследовать то, что у него есть, он не сможет сделать сына возлюбленного первенцем от сына ненавистного, который является первенцем;
Guide for the Perplexed
The laws which relate to property include laws concerning inheritance. They are based on the sound principle that man must not “withhold good from those to whom it is due” (Prov. 3:27), and when he is about to die, he must not conceive ill-will against his heirs, by squandering his property, but leave it to the one who has the greatest claim on it, that is, to him who is his nearest relation, “unto his kinsman that is next to him of his family” (Num. 27:11). It is clearly stated that the son has the first claim, then comes the daughter, then the brother, and then the father’s brothers, as is well known. The father must leave the right of the first-born to his eldest son, because his love for this son came first: he must not be guided by his inclination. He may not make the son of the beloved firstborn before the son of the hated (Deut. 21:16). Thus our highly equitable Law preserves and strengthens the virtue of respecting all kinsmen, and doing well unto them, as the prophet says: “He that is cruel troubleth his own flesh” (Prov. 11:17). The Law correctly says, “Thou shalt open thine hand wide unto thy brother, unto thy poor” (Deut. 15:11). Our Sages bestow much praise upon him who is kind to his relatives, and him who marries the daughter of his sister.