• Deuteronomy 23:12-14

      12 Designate a place outside the camp where you can go to relieve yourself.
      13 As part of your equipment have something to dig with, and when you relieve yourself, dig a hole and cover up your excrement.
      14 For the LORD your God moves about in your camp to protect you and to deliver your enemies to you. Your camp must be holy, so that he will not see among you anything indecent and turn away from you.
      
      

      Only thing that’s relevant, and it only a sin if you don’t cover it after.

    • It’s from Mark 7:18-20

      18 And he said to them, “Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him, 19 since it enters not his heart but his stomach, and is expelled?”[a] (Thus he declared all foods clean.) 20 And he said, “What comes out of a person is what defiles him.