[Machine] Do not leave the recitation of the opening of the book behind the imam, whether aloud or silently. This is the opinion of Ka'bir ibn Abdillah and Zaid ibn Abi Al-Jawari, and also A'mir. And if you recite it while in the kneeling position, then this is the opinion of 'Amr alone. And if you are in the kneeling position, recite it if you know that you will catch up with its end. And among them is Jabir ibn Abdullah Al-Ansari.  

لَا يَتْرُكْ قِرَاءَةَ فَاتِحَةِ الْكِتَابِ خَلْفَ الْإِمَامِ جَهَرَ أَوْ لَمْ يَجْهَرْ هَذَا لَفْظُ كَثِيرٍ وَزَادَ عَلِيٌّ وَابْنُ أَبِي الْجَوَارِيِّ وَلَوْ أَنْ تَقْرَأَ وَأَنْتَ رَاكِعٌ زَادَ عَمْرٌو وَحْدَهُ وَإِنْ كَانَ رَاكِعًا فَاقْرَأْهَا إِذَا عَلِمْتَ أَنَّكَ تُدْرِكُ آخِرَهَا وَمِنْهُمْ جَابِرُ بْنُ عَبْدِ اللهِ الْأَنْصَارِيُّ ؓ