Sunan an-Nasa'i, Book 14, Hadith 1402 (In-Book) ⓘ
Iyas bin Al-Akwa' narrated that his father said: "We used to pray jumu'ah with the Messenger of Allah then we would go back, and the walls had no shadow in which shade could be sought."
أَخْبَرَنَا شُعَيْبُ بْنُ يُوسُفَ، قَالَ أَنْبَأَنَا عَبْدُ الرَّحْمَنِ، عَنْ يَعْلَى بْنِ الْحَارِثِ، قَالَ سَمِعْتُ إِيَاسَ بْنَ سَلَمَةَ بْنِ الأَكْوَعِ، يُحَدِّثُ عَنْ أَبِيهِ، قَالَ كُنَّا نُصَلِّي مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم الْجُمُعَةَ ثُمَّ نَرْجِعُ وَلَيْسَ لِلْحِيطَانِ فَىْءٌ يُسْتَظَلُّ بِهِ .
also referenced under: Volume 2, Book 14, Hadith 1392 (DarusSalam)