In the Pericope of the Adulteress, John 8:6 has the most significant and interesting variant in the passage.  In the part where Jesus bends down and writes in the ground, about half of the majority text manuscripts add the words μη προσποιουμενος, see below.

εις την γην D Μ S U Γ Λ Ω 047 0233 2c 7 8 9 28 65c 115sup 118 700 892 1049 1071 1203 1216 1243 1514 2722 lat TR-Eras,Beza,Elz,Steph AN HF BG [NA28]

εις την γην       προσποιουμενος 1194

εις την γην μη προσποιουμενος E G H K 2* 18 27 35 65* 346 475 532 579 682 1212 1505 1519 2561-mg 2253 2907 geo-mss TR-Scriv RP

  lac  F P Q V Π

The John 8:6 passage it translated into English like this: “But Jesus bent down and was writing in the earth with his finger, taking no notice.”

But what was Jesus writing?  Messianic Rabbi Zev Porat (and Jerome before him) has a good answer to this.

Just prior to this in John 7:38, Jesus had declared himself to be the fountain of living waters.  And now that the Jewish leaders had turned away from that fountain, Jeremiah 17:13 was being fulfilled in two ways: they were put to shame, and their names were being written in the earth. Jeremiah 17:13 says, “Thou hope of Israel, Yahweh! All that forsake Thee shall be ashamed; they that turn away from Thee shall be written in the earth, because they have forsaken Yahweh, the fountain of living waters.”

This is in contrast to those who believe in the Son of God and are born again.  Their names are written in heaven, not in the earth which will be destroyed.  Luke 10:20; Hebrews 12:23; Phil 4:3; Rev. 13:8; 17:8;20:12,15; 21:27; Psalm 69:28.

The above material can be read in my translation of the gospel of John, in PDF and in Print, and in Kindle.