EMAIL AND ITS ATTACHEMENTS

HI,  MY FRIEND HAS PAID  CASH ADVANCE TO HOUSE OWNER FOR MAKING A LEASE AGREEMENT.  HOUSE OWNER DELAYED THE AGREEMENT FOR SOME REASONS, AND FINALLY SENT AN EMAIL TO MY FRIEND'S EMAIL ID STATING THAT HE HAS ATTACHED THE DRAFT OF THE AGREEMENT FOR REVIEW.  THE ATTACHMENT CLEARLY INDICATES THAT THE HOUSE OWNER HAS RECEIVED ADVANCE BY WAY OF CASH  AND OTHER PAYMENTS (BY WAY OF CHEQUE).  TILL NOW THE AGREEMENT WAS NOT MADE FOR ONE OR OTHER REASONS.  WILL MY FRIEND FACE ANY PROBLEM AS FOR AS ADVANCE PAYMENT MADE TO THE HOUSE OWNER AS HE DOESN'T HAVE ANY RECORDS EXCEPT THE HOUSE OWNER'S EMAIL AND ITS ATTACHMENTS SENT TO HIM.  PLEASE HELP AND PROVIDE YOUR SUGGESTIONS ASAP.