فَإِنْ بَدَا لَهُ أَنْ يَحْضُرَ الْجُمُعَةَ، فَتَوَجَّهَ إِلَيْهَا: بَطَلَتْ صَلَاةُ الظُّهْرِ عِنْدَ أَبِي حَنِيفَةَ بِالسَّعْيِ إِلَيْهَا، وَقَالَ أَبُو يُوسُفَ وَمُحَمَّدٌ: لَا تَبْطُلُ حَتَّى يَدْخُلَ مَعَ الْإِمَامِ.
Translation: If he then intends to attend Jumuah and sets out, Abu Hanifah holds his earlier Zuhr is nullified by setting out; Abu Yusuf and Muhammad hold it is not nullified until he actually joins the imam.
Abu Hanifah treats actual movement toward the obligatory Friday prayer as legally consequential. His two students require actual entry into the imam’s Friday prayer before the previous Zuhr is displaced.