Sexual-obscenity (’ervah) is from the aspect of Noah’s son Ḥam (hot), and this is the evil inclination, which ‘heats’ the body towards obscenity [Var. transgression (’aveirah) ], and reveals obscenities in the world, for it is from the aspect of the primordial snake, of which it is stated: (Gen. 3:14)... cursed are you of all beasts... And because he Ḥam is from its the snake’s side, (Gen. 9:25) he Noah said:... cursed is Canaan... etc.
And furthermore: these are ‘the masters of gifts’, who perform acts of kindness – towards the Shekhinah, Who is poor – which are: (Deut. 15:11)... you shall surely open... (Deut. 15:10) You shall surely give... (Deut. 15:14)... you shall surely bestow... etc. – there are ten. And the companions have indeed established them, those who are the Masters of the Mishnah.cxxxviiiBT Baba Metzi’a 31b