You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Genghis_Khan

Context:
One of the later ruptures between Toghrul and Temüjin was Toghrul's refusal to give his daughter in marriage to Jochi, the eldest son of Temüjin, a sign of disrespect in the Mongolian culture. This act led to the split between both factions and was a prelude to war. Toghrul allied himself with Jamukha, who already opposed Temüjin's forces; however, the internal dispute between Toghrul and Jamukha, plus the desertion of a number of their allies to Temüjin, led to Toghrul's defeat. Jamukha escaped during the conflict. This defeat was a catalyst for the fall and eventual dissolution of the Keraite tribe.

Question:
To whom did Toghrul refuse to give his daughter in marriage, angering Temüjin?

Jochi