Musar על כתובות 210:5

The Talmud in Ketuvot 105, divides the word שוחד into two, i.e. שהוא חד that it causes the judge to lean only in one direction, that of the person who offered the bribe. This is the reverse of אחדות, since it automatically removes the other litigant from the judge. When both litigants are equally close to the judge we can speak of אחדות, unity, harmony. This condition must prevail when judgment is pronounced, since המשפט לאלוקים הוא, and G–d represents unity and harmony (Deut 1,17).