It is narrated from Sayyiduna Jarir bin Abdullah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Allah, the Mighty and Majestic, grants for gentleness what He does not grant for harshness, and when Allah loves a servant He grants him gentleness. Any household that is deprived of gentleness is deprived (of good)."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2261