Meaning of stiphend?

Hi,

I am PCC candidate working as a article assistant in a firm,my principal send me on audit which is around 20-25 kms from my home,after completing the audit when i asked for the conveyance(which is reasonable) he denied it by saying that conveyance includes in the stiphend only(Rs 1500 as it is my 3rd year) i just want to know that cant we claim the reasonable claim for or it is also a part of stiphend which we are recieving as per CA Rules & Regulation only.Please provide all the components include inthe word stiphend as per CA Norms.PLease provide with the source if its possible so that i can prove my CA to be wrong

Regards,
Ankit Kumar