Next in importance to the Sruti are the Smritis or secondary scriptures. These are the ancient sacred law-codes of the Hindus dealing with the Sanatana-Varnasrama-Dharma. They supplement and explain the ritualistic injunctions called Vidhis in the Vedas. The Smriti Sastra is founded on the Sruti. The Smritis are based on the teachings of the Vedas. The Smriti stands next in authority to the Sruti. It explains and develops Dharma. It lays down the laws which regulate Hindu national, social, family and individual obligations.
The works which are expressly called Smritis are the law books, Dharma Sastras. Smriti, in a broader sense, covers all Hindu Sastras save the Vedas.
The laws for regulating Hindu society from time to time are codified in the Smritis. The Smritis have laid down definite rules and laws to guide the individuals and communities in their daily conduct and to regulate their manners and customs. The Smritis have given detailed instructions, according to the conditions of the time, to all classes of men regarding their duties in life.
The Hindu learns how he has to spend his whole life from these Smritis. The duties of Varnasrama and all ceremonies are clearly given in these books. The Smritis prescribe certain acts and prohibit some others for a Hindu, according to his birth and stage of life. The object of the Smritis is to purify the heart of man and take him gradually to the supreme abode of immortality and make him perfect and free.
These Smritis have varied from time to time. The injunctions and prohibitions of the Smritis are related to the particular social surroundings. As these surroundings and essential conditions of the Hindu society changed from time to time, new Smritis had to be compiled by the sages of different ages and different parts of India.
The Celebrated Hindu Law-Givers
From time to time, a great law-giver would take his birth. He would codify the existing laws and remove those which had become obsolete. He would make some alterations, adaptations, readjustments, additions and subtractions, to suit the needs of the time and see that the way of living of the people would be in accordance with the teachings of the Veda. Of such law-givers, Manu, Yajnavalkya and Parasara are the most celebrated persons. Hindu society is founded on, and governed by, the laws made by these three great sages. The Smritis are named after them. We have Manu Smriti or Manava Dharma-Sastra (the Laws of Manu or the Institutes of Manu), Yajnavalkya Smriti and Parasara Smriti. Manu is the greatest law-giver of the race. He is the oldest law-giver as well. The Yajnavalkya Smriti follows the same general lines as the Manu Smriti and is next in importance to it. Manu Smriti and Yajnavalkya Smriti are universally accepted at the present time as authoritative works all over India. Yajnavalkya Smriti is chiefly consulted in all matters of Hindu Law. Even the Government of India are applying some of these laws. There are eighteen main Smritis or Dharma Sastras. The most important are those of Manu, Yajnavalkya and Parasara. The other fifteen are those of Vishnu, Daksha, Samvarta, Vyasa, Harita, Satatapa, Vasishtha, Yama, Apastamba, Gautama, Devala, Sankha-Likhita, Usana, Atri and Saunaka.
The laws of Manu are intended for the Satya Yuga, those of Yajnavalkya are for the Treta Yuga; those of Sankha and Likhita are for the Dvapara Yuga; and those of Parasara are for the Kali Yuga. The laws and rules which are based entirely upon our social positions, time and clime, must change with the changes in society and changing conditions of time and clime. Then only the progress of the Hindu society can be ensured.
Need for a New Law-Code
It is not possible to follow some of the laws of Manu at the present time. We can follow their spirit and not the letter. Society is advancing. When it advances, it outgrows certain laws which were valid and helpful at a particular stage of its growth. Many new things which were not thought out by the old law-givers have come into existence now. It is no use insisting people to follow now those old laws which have become obsolete. Our present society has considerably changed. A new Smriti to suit the requirements of this age is very necessary. Another sage will place before the Hindus of our days a new suitable code of laws. Time is ripe for a new Smriti. Cordial greetings to this age.
The Inner Voice of Dharma
He who is endowed with a pure heart through protracted Tapas, Japa, Kirtana, meditation and service of Guru and who has a very clear conscience, can be guided by the inner voice in matters of Dharma or duty or moral action. The inner voice that proceeds from a clean heart filled with Sattva is, indeed, the voice of God or Soul or Antaryamin or Inner Ruler. This voice is more than Smriti. It is Smriti of Smritis. Purify your heart and train yourself to hear this inner voice. Keep your ear in tune with the ‘voice’.
The Sruti and the Smriti
The Sruti and the Smriti are the two authoritative sources of Hinduism. Sruti literally means what is heard, and Smriti means what is remembered. Sruti is revelation and Smriti is tradition. Upanishad is a Sruti. Bhagavad-Gita is a Smriti. Sruti is direct experience. Great Rishis heard the eternal truths of religion and left a record of them for the benefit of posterity. These records constitute the Vedas. Hence, Sruti is primary authority. Smriti is a recollection of that experience. Hence, it is secondary authority. The Smritis or Dharma Sastras also are books written by sages, but they are not the final authority. If there is anything in a Smriti which contradicts the Sruti, the Smriti is to be rejected.
Reference : ALL ABOUT HINDUISM By SRI SWAMI SIVANANDA