 alhassan may god be pleased with him said when the messenger of god may god bless him and grant him peace wanted to build his mosque in medina gabriel came to him and said to him build it seven cubits long in the sky. do not decorate it or engrave it.
قال الحسن رضى الله عنه إن رسول الله صلى الله عليه وسلم لما أراد أن يبنى مسجده بالمدينة أتاه جبريل فقال له .