Shapur's siege of al-Hadra

Al-Mas'udi relates that Shapur camped with his troops at the fortress of al-Hadr, the fortress of al-Dayzan al-Tanukhi, and spent a month there without finding a way to take it. ¹

Al-Nudayra, daughter of al-Dayzan, who had fallen in love with him, as al-Mas'udi relates, sent to him to scatter straw in the river al-Tharthar above the fortress and then follow it to see where it entered. He did so, and brought men in by that place. ¹

The people of the fortress were not aware until Shapur's men were among them. Al-Dayzan and those with him were killed, and he ordered the fortress demolished. ¹

Al-Mas'udi says that al-Dayzan had many soldiers, was at peace with the Byzantines, and his men raided Iraq and the countryside. ¹

The event involves Shapur ibn Ardashir and al-Dayzan ibn Mu'awiya, and takes place at al-Hadr. The date needs an additional source.