252. No probate or letters of administration to be granted except on production of certificate from assistant estate duty commissioner. Except in the case of an application by the Administrator General, no probate or letters of administration or resealing of probate or letters of administration shall be granted by the High Court or a district delegate unless the certificate of an assistant estate duty commissioner is produced to the High Court or a district delegate, as the case may be, to the effect that he or she is satisfied that the requirements of any written law relating to estate duty in regard to the payment of duty have been or will be complied with. 253. Caveats against grant of probate or administration. Caveats against the grant of probate or administration may be lodged with the High Court or a district delegate; and immediately on any caveat being lodged with any district delegate, he or she shall send a copy of it to the High Court. 254. Form of caveat. A caveat under section 253 shall be to the following effect— “Let nothing be done in the matter of the estate of ___________________, late of __________________, deceased, who died on the ______ day of _______________, 20 ____, at __________________, without notice to _______________, of _________________________________________________.”. 255. After entry of caveat, no proceeding taken on petition until after notice to caveator. No proceeding shall be taken on a petition for probate or letters of administration after a caveat against the grant of the petition has been entered with the judge or officer to whom the application has been made, or notice has been given of its entry with some other delegate, until after such notice to the person by whom the caveat has been entered as the court shall think reasonable. 256. Power to transmit statement to High Court in doubtful cases where no contention. In every case in which there is no contention, but it appears to the district