Additional Allowance for Temporary Period

Hi All,
In my company, we are allocating one Employee on client site for 6 months period. We are proving him Allowance of 20k till he is on client site.
Please help me with the draft.
Thanks for all the help in Advance.

" Apart from your regular salary / wages, you will be paid a special / relocation allowance of Rs.... per month. This special allowance is purely temporary for the period of your deputation to our client site....... and is payable from the day you report for work at client site, and will be discontinued / ceased to paid, once the client confirms the completion of job or discontinuance of the contact, whichever is early "

"You will be paid Rs........................as relocation allowance per month apart from your regular salary / wages. This allowance is purely temporary and only for the period of your deputation to our client site. This will be payable on the basis of days your present at client site from the day you report to work at client site, and same allownce will be discontinued / ceased to paid, once the client confirms the completion of job or discontinuance of the contact, whichever is early. "