Subhashitam – 29

शर्वरिर्दीपकश्चन्द्रः प्रभाते दीपको रविः ।
त्रैलोक्यदीपको धर्मः सुपुत्रः कुलदीपकः ॥

Meaning:
The moon is the light of the night, the sun is the light of the day, virtue is the light of the three worlds and a good son is the light of the family.