Osiepni en jasiki

Translation: 
Your friend is your enemy
Postproverbial: 
Osiepni ema kayi
Translation: 
it is your friend that bites you
Comments: 
Being close, the friend knows your secrets and weaknesses and thus it would be easy for him/her to turn against you. This is used to warn people against blind friendships
Language - Region: 
luo-kenya