Following are a number of back-translations of Mark 7:6:

• Uma: “Yesus said: ‘You, your following of God is just on the outside! How true the words that the prophet Yesaya wrote long ago that foretell you, like this their sound: God said: ‘Those people honor me just with their lips, their hearts are far from me.” (Source: Uma Back Translation)
• Yakan: “Isa answered, he said, ‘You are pretending to follow God but you are not. The word of God is really true which Nabi Isaya wrote about you. There God says, ‘These people honor (lit. make great) me with their mouth, but their livers do not follow/obey me.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “And Jesus answered, he said, ‘You whose faith in God is just deceit, very true is the word of God written by the ancient prophet Isaiah. He prophesied about you for he said, ‘These people,’ says God, ‘they say that they respect me. But there is no faith that has come into their breaths.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “Jesus answered and said, ‘This that God said that Isaias prophesied about you is true which says, ‘These people, they are praising/honoring me with their words, but their mind/thoughts are far from me.” (Source: Kankanaey Back Translation)
• Tagbanwa: “Jesus replied, ‘Really true is what was told by Isaias, that prophet of the past concerning you. You are only pretending to believe-in/obey God, like what he wrote which is the word of God, saying, ‘As for the serving and worshipping of me by these people, it’s only superficial (lit. on their beaks), their having no true holding-dear of me.” (Source: Tagbanwa Back Translation)

For the Old Testament quote, see Isaiah 29:13.