صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب المساجد - ذكر الخبر الدال على أن الله جل وعلا يدخل المرء الجنة ببنيانه موضع السجود في طرق السابلة بحصى يجمعها أو حجارة ينضدها
Chapter on Mosques - Report indicating that building a place for prostration, even with pebbles or stones, leads to Paradise.
1 hadith
Hadith 1610
Sayyiduna Abu Dharr Ghifari (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) said: "Whoever builds a mosque for the sake of Allah, even if it is as small as a bird’s nest, Allah will build for him a house in Paradise."