Scholars have stressed importance of Memorising Hadith's.

من حفظ على أمتي أربعين حديثاً من أمر دينه بعثه الله يوم القيامة فقيهاً عالماً

  Whosoever memorises and preserves for my people forty hadith relating to his religion, Allah will resurrect him on the Day of Judgment as a jurist and religious scholar. [narrated from Ibn `Abbās, Anas and Abu Hurairah (R.A)

Thus "Moiz Ul Uloom" have intoduced a Couse to enable students Memorize Several Ahadees form Bukhari Shareef / Sahi Muslim in a short span of 11 months.