1 Kgs 1:51

וַיֻּגַּ֤ד לִשְׁלֹמֹה֙ לֵאמֹ֔ר הִנֵּה֙ אֲדֹ֣נִיָּ֔הוּ יָרֵ֖א אֶת־הַמֶּ֣לֶךְ שְׁלֹמֹ֑ה וְ֠הִנֵּה אָחַ֞ז בְּקַרְנ֤וֹת הַמִּזְבֵּ֨חַ֙ לֵאמֹ֔ר יִשָּֽׁבַֽע־לִ֤י כַיּוֹם֙ הַמֶּ֣לֶךְ שְׁלֹמֹ֔ה אִם־יָמִ֥ית אֶת־עַבְדּ֖וֹ בֶּחָֽרֶב׃

It was reported to Solomon: “Behold, Adonijah fears King Solomon, and he has taken hold of the horns of the altar, saying, ‘Let King Solomon first swear to me not to put his servant to the sword.’”