Mahabharata Anushasna Parva Chapter 104:2

Mahabharata Anushasna Parva (Dana Dharma Parva) Chapter 104:2 One should wake up from sleep at the hour known as the Brahma Muhurta and then think of both religion and profit. Getting up from bed, one should then wash one's face and mouth, and joining one's hands in an attitude of reverence, say the morning prayers.[] In this way, one should when evening comes, say one's evening prayers also, restraining speech (with other people) the while. One should never look at the rising sun, nor at the setting sun.[] Nor should one look at the sun when he is in eclipse; nor at his image in the water; nor at midday when he is at the meridian. The Rishis, in consequence of their adoring the two twilights with great regularity succeeded in attaining to longevity. Hence, one should, restraining speech, say one's prayers regularly at the two twilights. As regards those Brahmanas that do not say their prayers at the two twilights, a righteous king should set them to accomplish such acts as are ordained for the Sudras. Persons of every order should never have sexual congress with other people's wives. There is nothing that shortens life so effectually as sexual congress with other people's wives. For as many thousand years shall the adulterer have to live in Hell as the number of pores on the bodies of the women with whom he may commit the offence. One should dress one's hair, apply collyrium to one's eyes, and wash one's teeth, as also worship the deities, in the forenoon. One should not gaze at urine or faeces, or tread on it or touch it with one's feet. One should not set out on a journey at early dawn, or at midday, or in the evening twilight, or with a companion that is unknown, or with a Sudra, or alone. While going along a road, one should, standing aside, always make way to a Brahmana, to kine, to kings, to an old man, to one that is weighted with a burden, to a woman quick with child, or to one that is weak. When one meets a large tree that is known, one should walk round it. One should also, when coming upon a spot where four roads meet, walk round it before pursuing one's journey. At midday, or at midnight, or at night in general, or at the two twilights, one should not proceed to spots where four roads meet. One should never wear sandals or clothes that have been worn by another. One should always observe the vow of Brahmacharya, and should never cross one's legs. One should observe the vow of Brahmacharya on the day of the new moon, as also on that of the full moon, as also on the eighth lunar day of both fortnights. One should never eat the flesh of animals not slain in sacrifice. One should never eat the flesh of the back of an animal. One should avoid censuring and calumniating others, as also all kinds of deceitful behaviour.] One should never pierce others with wordy shafts. Indeed, one should never utter any cruel speech.