Brihadratha Ikshvaku appears at the beginning of a Sanskrit text that is listed as what number in the Muktika canon?
Brihadratha Ikshvaku:  He appears at the beginning of the Maitri Upanishad after he had renounced his kingdom in favour of his son, seeking for himself relief from the endless cycle of birth and rebirth. Maitrayaniya Upanishad:  It is also known as the Maitri Upanishad (Sanskrit: मैत्री उपनिषद् , Maitrī Upaniṣad ), and is listed as number 24 in the Muktika canon of 108 Upanishads.
i don't know