Sunan Ibn Majah, Book 5, Hadith 899 (In-Book) ⓘ
It was narrated that Jabir said: “The Messenger of Allah said: ‘Whoever has an Imam, the recitation of the Imam is his recitation.’”
حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، عَنِ الْحَسَنِ بْنِ صَالِحٍ، عَنْ جَابِرٍ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " مَنْ كَانَ لَهُ إِمَامٌ فَإِنَّ قِرَاءَةَ الإِمَامِ لَهُ قِرَاءَةٌ " .
also referenced under: Hadith 850 (Reference) & Volume 2, Book 5, Hadith 850 (DarusSalam)