Having thus shown the importance of the Traditions, I now proceed to enter a little into detail on the question of the rules framed concerning them. The classification adopted by different authors may vary in some subordinate points; but the following account is adopted from a standard Muhammadan work. A Tradition may be Hadis-i-Quali, that is, an account of something the Prophet said; or Hadis-i-Fa'li, a record of something which he did; or Hadis-i-Taqriri, a statement of some act performed by other persons in his presence, and which action he did not forbid. The Traditions may be classed under two general heads:-- First.--_Hadis-i-Mutawatir_, that is, "an undoubted Tradition," the Isnad, or chain of narrators of which is perfect, and in which chain each narrator possessed all the necessary qualifications for his office.[64] Some authorities say there are only a few of these Traditions extant, but most allow that the following is one: "There are no good works except with intention," for example, a man may fast, but, unless he has the intention of fasting firmly in his mind, he gains no spiritual reward by so doing. Second.--_Hadis-i-Ahad._ The authority of this class is {71} theoretically somewhat less than that of the first, but practically it is the same. This class is again sub-divided into two:-- (1). _Hadis-i-Sahih_, or a genuine Tradition. It is not necessary to go into the sub-divisions of this sub-division. A Tradition is Sahih if the narrators have been men of pious lives, abstemious in their habits, endowed with a good memory, free from blemish, and persons who lived at peace with their neighbours. The following also are Sahih, though their importance as authorities varies. I arrange them in the order of their value. Sahih Traditions are those which are found in the collections made by Bukhari and Muslim, or in the collection of either of the above, though not in both; or, if not mentioned by either of these famous collectors, if it has been retained in accordance with their canons for the rejection or retention of Traditions; or lastly, if retained in accordance with the rules of any other approved collector. For each of these classes there is a distinct name. (2). _Hadis-i-Hasan._ The narrators of this class are not of such good authority as those of the former with regard to one or two qualities; but these Traditions should be received as of equal authority as regards any practical use.[65] It is merely as a matter of classification that they rank second. In addition to these names, there are a number of other technical terms which have regard to the personal character of the narrators, the Isnad, and other points. A few may be mentioned.