Texas Estates Code - EST § 356.104. Sale on Credit

(a) Estate personal property may not be sold on credit at public auction for a term of more than six months from the date of sale.

(b) Estate personal property purchased on credit at public auction may not be delivered to the purchaser until the purchaser gives a note for the amount due, with good and solvent personal security.  The requirement that security be provided may be waived if the property will not be delivered until the note, with interest, has been paid.