Does Anyone know quotes relating to Once-Returners / sakadagami I desperately need quotes from either scripture or from scholars.
The Sakadagami is mentioned in SN 55:24 - Sarakaani Sutta:


  "Take the case of another man. He is endowed with unwavering devotion to the Buddha, the Dhamma, the Sangha. But he is not joyous in wisdom and has not gained release. Yet by destroying three fetters and weakening lust, hatred and delusion, he is a Once-returner, who will return once more to this world and put an end to suffering. That man is entirely freed from... states of woe."