Srimad Bhagavatam Canto 03, Chapter 16, Text 05

SB 3.16.5

yan-namani ca grhnati
 loko bhrtye krtagasi
so ’sadhu-vadas tat-kirtim
 hanti tvacam ivamayah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
A wrong act committed by a servant leads people in general to blame his master, just as a spot of white leprosy on any part of the body pollutes all of the skin.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
A Vaisnava, therefore, should be fully qualified. As stated in the Bhagavatam, anyone who has become a Vaisnava has developed all the good qualities of the demigods. There are twenty-six qualifications mentioned in the Caitanya-caritamrta. A devotee should always see that his Vaisnava qualities increase with the advancement of his Krsna consciousness. A devotee should be blameless because any offense by the devotee is a scar on the Supreme Personality of Godhead. The devotee’s duty is to be always conscious in his dealings with others, especially with another devotee of the Lord.
Srimad Bhagavatam Canto 03, Chapter 16, Text 04
Srimad Bhagavatam Canto 03, Chapter 16, Text 06