Sunan Ibn Majah, Book 1, Hadith 97 (In-Book) ⓘ
It was narrated that Jabir bin 'Abdullah said: "The Messenger of Allah said: 'The Magicians of this Ummah are those who deny the decrees of Allah. If they fall sick, do not visit them; if they die, do not attend their funerals; and if you meet them, do not greet them with Salam.'"
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُصَفَّى الْحِمْصِيُّ، حَدَّثَنَا بَقِيَّةُ بْنُ الْوَلِيدِ، عَنِ الأَوْزَاعِيِّ، عَنِ ابْنِ جُرَيْجٍ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " إِنَّ مَجُوسَ هَذِهِ الأُمَّةِ الْمُكَذِّبُونَ بِأَقْدَارِ اللَّهِ إِنْ مَرِضُوا فَلاَ تَعُودُوهُمْ وَإِنْ مَاتُوا فَلاَ تَشْهَدُوهُمْ وَإِنْ لَقِيتُمُوهُمْ فَلاَ تُسَلِّمُوا عَلَيْهِمْ " .
also referenced under: Hadith 92 (Reference) & Volume 1, Book 1, Hadith 92 (DarusSalam)