न वदेत्सर्वजंतूनां हृदि रोषकरं बुधः । संध्ययोरग्निकार्यं च कुर्यादैश्वर्यसिद्धये 1.13.८० ।
An intelligent man shall not speak words wounding the hearts of others. For achieving prosperity he shall perform sacred rites in the fire at dawn and at dusk.