Не суй свой нос в чужой вопрос

Carry on your own affairs and do not become concerned with those of other people. See Любопытной Варваре нос оторвали (Л)

Var.: Не суй (тычь) носа в чужое просо

Cf: Curiosity killed the cat (Am., Br.). Don't thrust your sickle into another's corn (Am.). Enquire not what boils in another's pot (Br.). Every person should row his own boat (Am.). Go home and say your prayers (Br.). Hoe your own row (Am.). It that lies not in your gate breaks not your shin (Br.). Keep your nose out of other people's business (Am.). A man should not stick his nose in his neighbor's pot (Am.). Meddle not with another man's matter (Br.). Mind your own business (Am., Br.). Never be breaking your shin on a stool that is not in your way (Am.). Paddle your own canoe (Am., Br.). Skeer your own fire (Br.). The stone that lies not in your gate breaks not your toe (Br.)