Al-Kāfi

Hadith 1976
congregational-prayermosque
5ـ يُونُسُ عَنْ مُعَاوِيَةَ بْنِ عَمَّارٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَم) أَنَّ مِنَ الْمَذْخُورِ الإِتْمَامَ فِي الْحَرَمَيْنِ.
5. Yunus has narrated from Mu‘awiyah ibn ‘Ammar who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘It is a saving to perform Salat (prayer) in complete form in the two al-Haram (the sacred places), (Masjid al-Haram and Masjid of al-Madinah).”’
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī