In Genesis 24:9, is putting one's hand under the thigh symbolic or a euphemism?:
Gen_24:9 And the servant put his hand under the thigh of Abraham his master, and sware to him concerning that matter.
I have read/heard that the thigh was considered the seat of generative power and I've also read/heard that it was euphemism for touching the scrotum.
Bonus: Also, I assume that since this was not prescribed in Torah that this is a Semitic custom. Is there any extra-biblical references to the practice, or any allusions to the practice elsewhere in the scriptures?