"Hajji (Arabic: الحجّي‎) (sometimes spelled Hadji, Haji, Alhaji, Al hage, Al-hajj or El-Hajj) is an honorific title which is given to a Muslim who has successfully completed the Hajj to Mecca.[1] It is also often used to refer to an elder, since it can take years to accumulate the wealth to fund the travel (and did particularly before the advent of mass air travel), and in many Muslim societies to a respected man as an honorific title. The title is placed before a person's name; for example, Saif Gani becomes Hajji Saif Gani."
https://en.wikipedia.org/wiki/Hajji

"I am translating a birth certificate from the Philippines into German. In the section "remarks" there is this sentence:
"Persuant to the order (...) rendered by judge XXX, ***al haj*** of the regional trial court (...), the middle name of the child (...) is hereby ordered corrected from (...) to (...).
Who or what is an "al haj"?"
https://www.proz.com/kudoz/arabic-to-english/certificates-di...

--------------------------------------------------
Note added at 11 mins (2021-08-16 19:42:20 GMT)
--------------------------------------------------


"Al-Hajj Zyafatollah (Arabic Edition) the Third Edition"
https://www.amazon.com/al-Hajj-zyafatollah-Arabic-Ayatollah-...

Al-Hajj
Pronunciation /alˈhadʒ/ /alˈhɑːdʒ/
NOUN
(also al-Hajj)
Islam
1(A title of) a person who has undertaken the hajj; = "hadji".
2 rare The hajj.
https://www.lexico.com/definition/al-hajj

--------------------------------------------------
Note added at 21 mins (2021-08-16 19:53:04 GMT)
--------------------------------------------------

Amazon's reference is for "الحج", not "الحاج". Please ignore it.