Meaning of the word credit in it for tds deduction

hi all,

could you please help me on the following:

Meaning of the word CREDIT used in Income Tax for deductionof TDS.

TDS shall be deducted either at the time of Credit to the account of the Payee or Payment which ever is earlier.

Query: suppose if i receive a bill from my vendor on 15th June 2012 and bill date is 15th May12.....can i simply say that as i received the bill on 15th June 2012 and credited the vendoer account on 15th June12 only hence my liability to deduct TDS is on 15th June 2012 and not 15th May 2012.

thanks

Davison