Acquisition of knowledge is incumbent on every Muslim. Accordingly, the tradition intends to state that at whatever stage of knowledge one May be, he should strive to make further advance. The Prophet means that acquisition of knowledge is obligatory for all Muslims, scholars as well as ignorant men, beginners as well as learned scholars. Whatever stage of knowledge man may attain, he is still like a child entering into adulthood i.e. he should learn things which were not obligatory for him earlier.The tradition implies that a Muslim can never be relieved of his responsibility of acquiring knowledge.No field of knowledge or science is undesirable or detestable in itself; for knowledge is like light and so it is always desirable. The reason that some of the sciences have been regarded as "undesirable" is because of the undesirable effects they produce.