What was narrated concerning the time of Friday (Prayer) Sunan Ibn Majah 1101

Arabic hadith text
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ سَعْدِ بْنِ عَمَّارِ بْنِ سَعْدٍ، مُؤَذِّنِ النَّبِيِّ ـ صلى الله عليه وسلم ـ حَدَّثَنِي أَبِي عَنْ أَبِيهِ عَنْ جَدِّهِ أَنَّهُ كَانَيُؤَذِّنُ يَوْمَ الْجُمُعَةِ عَلَى عَهْدِ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ إِذَا كَانَ الْفَىْءُ مِثْلَ الشِّرَاكِ ‏.‏
Translation
‘Abdur-Rahman bin Sa’d bin ‘Ammar bin Sad, the Mu’adh-dhin oftheProphet (ﷺ), said

“My father told me, narrating from hisfather,from his grandfather, that during the time of the Messengerof Allah(ﷺ), he used to call the Adhan on Fridays when the shadowwas like asandal strap.”