No abstract

Manquliy learning is a form of variation in the transmission of knowledge in classical Islamic scholarship. Manqūliy learning is a characteristic as well as a feature of the Islamic education system that is not shared by others. In addition, mutawâtir manquliy learning is believed to be a mechanism in obtaining knowledge, so that a person's knowledge is tested for validity and can be accounted for morally and scientifically. However, in its development the manquliy learning mindset continues to grow, not only in essential matters, but also in other matters, so that there are pros and cons between parties regarding who is the holder of scientific authority and how science can be said to be manquliy. The purpose of this paper is to try to raise the phenomenon of the actualization of LDII manqūliy learning in the education system and da'wah of their organization. This research is a qualitative study. The results show that manquliy learning as a process of transmitting knowledge is no longer limited to giving authority to a person (student) in the aspect of the mechanism of acquiring knowledge, but must include 3 processes at once, namely Pemanql the holder of knowledge authorization, manqūl material development (internalization) and monitoring and realization of the output of the learning. Then, the authorization of manquliy learning is implemented in 2 steps, namely the mainstream monopoly and the hegemony of dalil authorization.

This Research was conducted in the Cilodong area and its surroundings, Cilodong district, Depok, West Java. The geology in this research area consists of Qa (alluvium), Qav ( alluvium fan), and Qv (young volcanic unit). The groundwater level in this study area ranged from 76.2-86.14 dml. This research area has a high Cl (chloride) value with a minimum value of 11,846 mg/l at SG-12 and a maximum value of 70,517 mg/l at SG-19. The difference in Cl (chloride) levels is also supported by differences in the study area such as TDS values of 40 mg/l at SG-12 and 200 mg/l at SG-18 and EC of 40 µmhos/cm at SG-12 and 400 µmhos/cm at SG-18.