The magistrate escorted the Tang king right up to the gate of the noble path of rebirth and, bowing, called out, 'Your Majesty, this is the place of emergence. Your humble magistrate begs leave to return, and has Marshal Zhu see you the rest of the way.'

超生貴道門 is the gate onto the "noble path" of rebirth, one of the six just described — and it is being used as an exit. 出頭之處 is "the place where you come out." 著 is zhuó, to direct someone.

The Tang king thanked him: 'I have troubled you, sir, to come so far.'

遠踄, yuǎn bù, is to walk a long way; 踄 is a variant writing of 步, to step.

The magistrate said, 'When Your Majesty reaches the world of light, by all means hold a Grand Mass of Land and Water to deliver the ownerless, wronged souls — do not on any account forget.'

The magistrate collects on the favour. 超度 is to ferry the dead over to salvation — the technical verb for what a Buddhist requiem does. 無主的冤魂 are the "masterless wronged souls," the ones with nobody to burn offerings for them: the unransomed dead of the Nai and the City of the Wrongfully Dead.

'If in the shadow-world there be no voice of grievance, then the world of light may enjoy the blessings of great peace.'

報怨 is to repay a grievance. 方得 uses dé: only then can. The political claim is unmissable — peace in the country above depends on nobody complaining below.

'Whatever is not good in all your conduct may be reformed, point by point.'

凡百 is "in all things." 一一, yī yī, is "one by one," a doubling that means point by point, item by item.

'Exhort all the world to do good, and I warrant your posterity shall be long, and your realm forever secure.'

為善 is wéi shàn, to do good. 管教, with 教 as jiào, is "I guarantee." 綿長, mián cháng, is long-drawn-out, like unwinding silk floss; 長 is cháng. The terms are now fully stated: preach virtue, and your dynasty lasts.