
 
has a strong religiosity tends to perform the actions 
commanded in his religion. Zakat is one of the pillars 
of  Islam,  so  a  devout  Muslim  will  pay  zakat.  The 
stronger the level of a person's religiosity the stronger 
their  istiqomah  in  performing  religious  orders, 
including the implementation of zakat. Then the trust 
(muzakki  on  the  zakat  processing  agencies)  is 
believed  to  play  a  role  in  establishing  customer 
perceptions  in  their  relationship  with  service 
companies (Cronin and Taylor 1992: 23). Based on 
the  letter  An-Nahl  verse  116  written  above,  zakat 
employees management agencies must be honest with 
everything  about  the  products  and  services  they 
offered, so that the muzakkitrust in the institution 
will be maintained. If the trust of muzakki has been 
maintained then it is not impossible muzakki will pay 
zakat istiqomah through zakat institution. 
2  LITERATURE REVIEW 
2.1  Zakah 
According to  the  term fiqh Islam, zakat  means the 
property that must be excluded from the wealth of the 
rich  to  be  delivered  to  those  who  are  entitled  to 
receive it, with the rules that have been determined in 
syara' (Anshori, 2006: 12). The legal basis of zakat is 
set within QS. Al Baqarah verses 110. 
2.2  Religiosity 
According to Glock and Stark in Ancok and Suroso 
(2001) religiosity is how far the knowledge, how firm 
belief, how diligent the  implementation of  worship 
and  how  deep  appreciation  of  one's  religion. 
Ratnasari  (2015)  mentioned  in  his  research,  the 
dimension of religiosity are as follows: Dimension of 
Faith  (Aqidah),  Dimension  of  Religious  Practice 
(Shariah)  Dimension  of  Experience  (Ihsan) 
Dimension  of  Knowledge  of  Religion  (Science) 
Dimension of Approach (Akhlaq). 
2.3  Trust 
Dabholkar  (1995)  mentions,  consumer  confidence 
depends on the consumer experience in consuming 
goods or services and receive good information from 
service  providers.  Morgan  and  Hunt  (1994) 
mentioned that there are six indicators of trust, such 
as  consistent  service  delivery,  offering  quality 
products, open in the delivery of information about 
the products offered,  timeliness  in  product  service, 
good response, and good impression. 
2.4  Istiqomah Muzakki 
According  to  Tasmara  (2001:  173)  that  istiqomah 
translated as a form of inner quality that gave birth to 
consistent  attitude  (obedient  principle)  and  firm 
stance to establish and shape something towards the 
perfection or better conditions. Tasmara (2001) adds, 
the  four  elements  contained  in  istiqomah  attitude, 
namely:  Commitment,  Consistence,  Consequence, 
and Continuous (Echols and Shadily 2006: 144). 
3  METHODOLOGY 
The  approach  used  in  this  research  is  quantitative 
approach.  In  the  data  collection  procedure,  the 
researcher took the entire population of muzakki who 
had  paid  zakat  on  zakat  management  institution 
which is a resident of Surabaya. While the sample in 
this study is 60 muzakki who have paid zakat on zakat 
management institution that domiciled in Surabaya. 
This is based on the opinion of Gay and Diehl (1992: 
146)  that  the  sample  should  be  as  big  as  possible. 
Sampling  technique  using  Probability  Sampling  by 
using  accidental  sampling  or  simple  random 
sampling.  This  is  because  the  collection  of sample 
members  from  the  population  is  done  randomly 
regardless of the strata within the population. This is 
done  when  the  members  of  the  population  are 
considered homogeneous. 
4  RESULTS AND DISCUSSION 
Table 1: Multiple linear analysis. 
Unstandardized 
Coefficients 
Unstandardized 
Coefficients 
 
The results of the test above, obtained the regression 
equation as follows: 
Y=(1,403)+0,237X
1
+0,205X
2
+e 
Information:   
Y  : Istiqomah Muzakki variable 
X
1
 : religiosity variable 
X
2
 :trust variable 
e  :standard error 
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