Book 5: 《公冶長》 Gong Ye Chang
《公冶長》 Passage 5.17
子曰：「晏平仲善與人交，久而敬之。」
Legge Translation (1861)
The Master said: "Yan Ping knew well how to maintain friendly intercourse. The acquaintance might be long, but he showed the same respect as at first."