Following are a number of back-translations of Matthew 5:36:

• Uma: “Also do not swear naming our (incl.) head, because we (incl.) are not able to make our (incl.) hair white or black, not even just one hair.” (Source: Uma Back Translation)
• Yakan: “Do not swear like for example you say, ‘May my head split if it is not true!’ because it is not you who made your body. Even one single hair of yours you cannot make grow black or white.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “And even your head, if there is that which you will promise, don’t say may your hair turn white if you do not carry it out, for you have no power to make even one of your hairs turn white or turn black.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “Even your heads, don’t swear-by them because you are not able to turn-white or turn-black even one hair.” (Source: Kankanaey Back Translation)
• Tagbanwa: “Yes indeed, it really is no longer possible/acceptable for you to say, ‘I swear it even if my head will be cut off,’ because there isn’t even one strand of hair on your head that you can make white or make black to sprout.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “Do not say that you will forfeit your head if it is not true what you say. Because concerning your head, not even one of your hairs can make white nor black.” (Source: Tenango Otomi Back Translation)