What are the benefits and reward of praying in congregation at the mosque for all prayers, and is there a difference in reward between praying in a large mosque and a smaller one that accommodates only ten worshipers?

Performing the prescribed prayers in congregation has immense benefits, among them: fulfilling the obligation enjoined by Allah and achieving the great reward associated with it. Congregational prayer surpasses individual prayer by twenty-seven degrees, as stated in the agreed-upon hadith narrated by Ibn Umar and Abu Hurayrah.

Congregational prayer achieves the gathering of Muslims, the harmony of their hearts, and the exchange of advice. It is the best aid for performing prayers at their prescribed times, and a response to the call of the muezzin: "Hasten to the prayer, hasten to success." And whoever prays in congregation in the mosque is under the protection of Allah. As for the difference between praying in a small mosque and a large one, congregational prayer in the mosque with the larger congregation is better and more beloved to Allah Almighty.