It is narrated from Nafi' that Sayyiduna Ibn Umar (may Allah be pleased with them both) had a friend in Sham with whom he used to correspond. Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) wrote to him: It has reached me that you have said some (wrong) things about Qadar (divine decree), so do not write to me again, for I heard the Messenger of Allah (peace and blessings be upon him) saying: "Soon there will be people in my Ummah who will deny Qadar (divine decree)." This hadith is sahih (authentic) on the condition of Muslim, because he used Abu Sakhr Humayd bin Ziyad as evidence, but the two Shaykhs did not record it.