Khallad bin al-Sa'ib narrates: I went to Sayyiduna Usamah bin Zayd (may Allah be pleased with him) and he praised me to my face, then he said: What moved me to praise you to your face is that I heard the Messenger of Allah (peace and blessings be upon him) say: "When a believer is praised to his face, faith increases in his heart."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 421