The Messenger of Allah ﷺ said, "Satan declared, 'By Your might, my Lord, I will never cease to lead Your servants astray as long as their souls remain in their bodies.' The Lord replied, 'By My might and majesty, I will never cease to forgive them as long as they seek My forgiveness.'"
قال رسول الله ﷺ: إن الشيطان قال: وعزتك يا رب لا أبرح أغوي عبادك ما دامت أرواحهم في أجسادهم، قال الرب: وعزتي وجلالي لا أزال أغفر لهم ما استغفروني.
Ahmad (11237, 11729) narrated it through two routes from Ibn Lahia, who said, Darraj narrated to us, from Abu Haytham, from Abu Saeed Khudri, and he related it.Ibn Lahia has well known issues. Darraj is Ibn Saman, Abu Samh, and his narration from Abu Haytham is daif.However, Ahmad (11244) also narrated it through another route from Abu Salama, who said, Layth (that is, Ibn Saad) informed us, from Yazid bin Had, from Amr, from Abu Saeed Khudri, and he related it.This chain contains a break, for Amr, who is Ibn Abu Amr Qurashi, did not meet Abu Saeed Khudri.But taking the two chains together, the hadith becomes hasan.