Umar bin Khattab reported,

I heard the Messenger of Allah ﷺ say, "Whoever builds a mosque for Allah in which the name of Allah the Exalted is mentioned, Allah will build for him a house in Paradise in return."

Azami 12887

Sahih

عن عمر بن الخطاب- في حديث طويل- قال

سمعت رسول الله ﷺ يقول: ومن بنى لله مسجدا يذكر فيه اسم الله تعالي، بني الله له به بيتا في الجنة.

الأعظمي 12887صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Tafsir of the great Quran
Chapter
Tafsir of Surah Nur
Section
His saying, "In houses which Allah has ordered to be raised and in which His name is remembered. Therein glorify Him in the mornings and the evenings men whom neither trade nor sale diverts from the remembrance of Allah and the establishment of prayer and the giving of zakat. They fear a day in which the hearts will be overturned."
Numbering
Jami al-Kamil 12887 (2nd edition)
Azami 12887