Mishkat al-Masabih #101
Faith
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَعَنْ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا تُجَالِسُوا أَهْلَ الْقَدَرِ وَلَا تفاتحوهم» رَوَاهُ أَبُو دَاوُد
‘Umar reported God’s messenger as saying, “Do not sit with those who believe in freewill and do not address them before they address you."
Abu Dawud transmitted it.
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About Mishkat al-Masabih
This hadith is #101 from Mishkat al-Masabih, in the Book of Faith.