קַ֣ח אֶת־הַמַּטֶּ֗ה וְהַקְהֵ֤ל אֶת־הָעֵדָה֙ אַתָּה֙ וְאַהֲרֹ֣ן אָחִ֔יךָ וְדִבַּרְתֶּ֧ם אֶל־הַסֶּ֛לַע לְעֵינֵיהֶ֖ם וְנָתַ֣ן מֵימָ֑יו וְהוֹצֵאתָ֨ לָהֶ֥ם מַ֙יִם֙ מִן־הַסֶּ֔לַע וְהִשְׁקִיתָ֥ אֶת־הָעֵדָ֖ה וְאֶת־בְּעִירָֽם׃
“Ambillah tongkat itu, lalu kumpulkanlah jemaah itu, engkau dan Harun, saudaramu. Berbicaralah kepada bukit batu itu di depan mata mereka, maka bukit batu itu akan mengeluarkan airnya. Dengan demikian engkau akan mengeluarkan air bagi mereka dari bukit batu itu dan memberi minum jemaah itu serta ternak mereka.”
Kitzur Shulchan Arukh
If you own animals or birds (poultry), and it is your responsibility to feed them, you are not allowed to eat anything until you feed them, as it is written (Deuteronomy 11:15): "And I will put grass in your fields for your cattle (animals) and you will eat and be satisfied." Thus the Torah has given preference to feeding the cattle [animals] before the feeding of man. But as regards drinking, man comes first as it is written (Genesis 24:14): [Rivkah said] "Drink first and I will also give your camels to drink." Similarly it is written (Numbers 20:8): "And you will give drink to the congregation and to their animals."