Your own counsel that has fetched you relief muts have already opined on leave application for the said period, after your acquittal, and break in service as per title of the query.
Your jail term was a situation out of your control.
You have been acquitted.
Usually the leave application is initiated by employee and submitted under proper acknowledgment and leave is sanctioned or declined in writing citing reason and many employers and their attorneys in HR/Personnel/legal cell cite service/conduct and discipline rules in such cases.
Probably you were asked to submit leave application and may be in concurrence with service rules, copy of which must be with you, or IT was verbal direction and principle of ‘No Work NO pay’ was followed.
You have used the terms; ‘saying’ that are verbal.
If you puruse you may get answer in service rules also or the said Lawyer may also cite the provisons of rules to satisfay you, in writing.
You have not spent the period of jail term on job.
The apprehension is that you may not get half pay, from establishment as already informed to you by Lawyer.