Abstract: As mentioned in the Mahāvaṃsa the daughter of King Aśoka was Sanghamittā, was married to Aggibrahma. The son of these two was Sumana. Whilst the prince Tissa, the brother of the Aśoka receiving the pabbajjā from the thēra Mahādhammarakkhita with four hundred thousand persons the nephew of the Aśoka, Aggibrahma ordained together with them. Mahāvaṃsa describes since the time of the Aggibrahma’s pabbajjā Sangamttā looked forward to enter the order. Sangamittā received the pabbajjā at the age of eighteen. On the same day she received the shikshadāna. The directress of Sangamittā was the renowned Dhammapālā and her teacher was Ayupālā. She received the pabbajjā in the sixth regnal year of king Dhammāsōka.