This hadeeth comes under the following chapter: IT IS FORBIDDEN FOR A MUSLIM TO HAVE ESTRANGED RELATIONS WITH THE OTHER MUSLIM BEYOND THREE DAYS WITHOUT ANY REASON OF SHARI'AH
This hadith has been transmitted on the authority of Zuhri with a slight variation of wording (and the words are):" The one turning away and the other turning away when they meet and one avoids the other and the other also avoids him."