This study describes how murabahah for sharia banking KPR products operate as well as murabahah for KPR products that have indications of hilah (legal engineering). This study uses a qualitative method of literature (library research) as a research approach. The findings of this study indicate that Islamic banking has modified the original concept of murabahah contracts, namely that the bank does not yet have a house to sell. The murabahah contract is implemented through murabahah li al-amir bi al-shira' (the buyer requests and authorizes another party to buy an item with certain criteria, then he promises to buy the item throughselling murabahah). This shows that the bank is no longer selling goods, but only representing customers through wakalah. The role of the bank is to support funds, not to enter into a sale and purchase contract. So that shows that the murabahah of Sharia KPR is formulated through the hilah based on the indications and parameters of hilah. However, hilah on murabahah are categorized as hilah masyru'ah (hilah are allowed). It can be concluded that the murabahah of Sharia KPR can be used for a limited time, but it is not an ideal contract concept to be used for a long time.

This study aims to explain the definition of hadith science, branches of hadith science, and methods of approaching hadith science in Islamic studies. Then the author will examine the hadith about "the sleep of the fasting people is worship" from the perspective of 'ulûm al-hadīṡ. The hadith about "the sleep of fasting people is worship" is interesting to study because this hadith is often used as an excuse to be unproductive when fasting, especially during Ramadan. The research method used in this study is a qualitative method through library research. The results of this study show that 'ulûm al-hadīṡ is the rule for knowing the condition of sanad and matan of a hadith. At the same time, the object of study is to know the validity and absence of a hadith. Hadith research activities have 4 (four) steps, namely takhrīj al-hadith, i'tibār, rāwi personal research (sanad research), and matan hadith research. The analysis of the hadith "the sleep of fasting people is worship" shows that this hadith is a dhaif hadith. Even some scholars mention that this hadith is false and cannot be used as a hujjah.