В НОГАХ ПРАВДЫ НЕТ (saying) ( usu. said when inviting s.o. to sit down) there is no need to stand—sit down
take a load off your feet
give your feet a rest.
Каждому, кто подходил, мы говорили: «Садись, товарищ, с нами - в ногах правды нет...» (Ерофеев 1). То everyone who came up, we said, "Sit down with us, take a load off your feet, comrade..." (1a).