Let him not insult those who have redundant limbs or are deficient in limbs, nor those destitute of knowledge, nor very aged men, nor those who have no beauty or wealth, nor those who are of low birth.
न स्पृशेत् पाणिनोच्छिष्टो विप्रो गोब्राह्मणानलाण् । न चापि पश्येदशुचिः सुस्थो ज्योतिर्गणान् दिवा ॥ १४२ ॥
A Brahmana who is impure must not touch with his hand a cow, a Brahmana, or fire; nor, being in good health, let him look at the luminaries in the sky, while he is impure.
Let him eagerly follow the (customs which are) auspicious and the rule of good conduct, be careful of purity, and control all his organs, let him mutter (prayers) and, untired, daily offer oblations in the fire.