וַיִּגְוַ֨ע יִצְחָ֤ק וַיָּ֙מָת֙ וַיֵּאָ֣סֶף אֶל־עַמָּ֔יו זָקֵ֖ן וּשְׂבַ֣ע יָמִ֑ים וַיִּקְבְּר֣וּ אֹת֔וֹ עֵשָׂ֥ו וְיַעֲקֹ֖ב בָּנָֽיו׃
And Yitzchak expired and died and was gathered to his people, old and full of days; and Eisav and Yaakov his sons buried him.
Bereshit Rabbah 65:16 (and related on the burial).
Sefaria · Bereshit Rabbah 65.16
ויקברו אותו עשו ויעקב — שניהם השתתפו בקבורתו.
“And Eisav and Yaakov his sons buried him” — both participated in his burial.
The verse records joint participation of the two brothers in the burial of their father.
Derash on the joint burial (Bereshit Rabbah).
Eisav and Yaakov together buried Yitzchak.