ואלו קרעין שאין מתאחין הקורע על אביו ועל אמו ועל רבו שלימדו תורה ועל נשיא ועל אב ב"ד ועל שמועות הרעות ועל ברכת השם ועל ספר תורה שנשרף ועל ערי יהודה ועל המקדש ועל ירושלים וקורע על מקדש ומוסיף על ירושלים
And these are the rents of mourning that may never be properly mended: One who rends his garments for the death his father, or for his mother, or for his teacher who taught him Torah, or for the Nasi, or for the president of the court; or upon hearing evil tidings; or hearing God’s name being blessed, which is a euphemism for hearing God’s name being cursed; or when a Torah scroll has been burned; or upon seeing the cities of Judea that were destroyed or the destroyed Temple or Jerusalem in ruins. This is the way one conducts himself when approaching Jerusalem when it lies in ruin: He first rends his garments for the Temple and then extends the rent for Jerusalem.
נשיא ואב בית דין ושמועות הרעות מנלן דכתיב (שמואל ב א, יא) ויחזק דוד בבגדיו ויקרעם וגם כל האנשים אשר אתו ויספדו ויבכו ויצומו עד הערב על שאול ועל יהונתן בנו ועל עם ה' ועל בית ישראל כי נפלו בחרב שאול זה נשיא יהונתן זה אב ב"ד על עם ה' ועל בית ישראל אלו שמועות הרעות
§ From where do we derive that one must rend his clothing for the death of the Nasi or the president of the court and upon hearing evil bad tidings? As it is written, when David heard about the defeat of Israel and the death of Saul and his sons: “Then David took hold of his clothes, and rent them; and likewise all the men that were with him: And they mourned, and wept, and fasted until evening, for Saul and for Jonathan his son, and for the people of the Lord, and for the house of Israel; because they were fallen by the sword” (II Samuel 1:11–12). The Gemara explains how the aforementioned halakhot are derived from the verse: “Saul”; this is a reference to the Nasi, as Saul was king of Israel. “Jonathan”; this is a reference to the president of the court. “For the people of the Lord, and for the house of the Israel”; these are a reference to evil tidings.
(כט) וַיֹּ֗אמֶר לֹ֤א יַעֲקֹב֙ יֵאָמֵ֥ר עוֹד֙ שִׁמְךָ֔ כִּ֖י אִם־יִשְׂרָאֵ֑ל כִּֽי־שָׂרִ֧יתָ עִם־אֱלֹהִ֛ים וְעִם־אֲנָשִׁ֖ים וַתּוּכָֽל׃
(29) Said he, “Your name shall no longer be Jacob, but Israel, for you have striven with beings divine and human, and have prevailed.”
(כה) וַיִּוָּתֵ֥ר יַעֲקֹ֖ב לְבַדּ֑וֹ וַיֵּאָבֵ֥ק אִישׁ֙ עִמּ֔וֹ עַ֖ד עֲל֥וֹת הַשָּֽׁחַר׃ (כו) וַיַּ֗רְא כִּ֣י לֹ֤א יָכֹל֙ ל֔וֹ וַיִּגַּ֖ע בְּכַף־יְרֵכ֑וֹ וַתֵּ֙קַע֙ כַּף־יֶ֣רֶךְ יַעֲקֹ֔ב בְּהֵֽאָבְק֖וֹ עִמּֽוֹ׃ (כז) וַיֹּ֣אמֶר שַׁלְּחֵ֔נִי כִּ֥י עָלָ֖ה הַשָּׁ֑חַר וַיֹּ֙אמֶר֙ לֹ֣א אֲשַֽׁלֵּחֲךָ֔ כִּ֖י אִם־בֵּרַכְתָּֽנִי׃ (כח) וַיֹּ֥אמֶר אֵלָ֖יו מַה־שְּׁמֶ֑ךָ וַיֹּ֖אמֶר יַעֲקֹֽב׃ (כט) וַיֹּ֗אמֶר לֹ֤א יַעֲקֹב֙ יֵאָמֵ֥ר עוֹד֙ שִׁמְךָ֔ כִּ֖י אִם־יִשְׂרָאֵ֑ל כִּֽי־שָׂרִ֧יתָ עִם־אֱלֹהִ֛ים וְעִם־אֲנָשִׁ֖ים וַתּוּכָֽל׃
(25) Jacob was left alone. And a man wrestled with him until the break of dawn. (26) When he saw that he had not prevailed against him, he wrenched Jacob’s hip at its socket, so that the socket of his hip was strained as he wrestled with him. (27) Then he said, “Let me go, for dawn is breaking.” But he answered, “I will not let you go, unless you bless me.” (28) Said the other, “What is your name?” He replied, “Jacob.” (29) Said he, “Your name shall no longer be Jacob, but Israel, for you have striven with beings divine and human, and have prevailed.”