Why is Arafat named this way?

Imām Ibn al-Jawzī (d. 597/1201) summarized the scholars' opinions in his book "Zād al-Masīr" as follows:

1. Allah sent Jibrīl (Gabriel) to Abraham and made him perform Hajj. When he reached Arafāt, Gabriel said, "I have come to know," (`araftu) and so it was named "Arafāt". [ʿAlī]
2. It was named "Arafāt" because it is where Adam and Eve met and recognized each other. [al-Ḍaḥḥāk]