Visiting a Believer Socially and When He is Ill
Kitāb al-Muʾmin|Volume 1|Book 1|Chapter 6
153 - وعن أبي عبد الله عليه السلام قال: من زار أخاه المؤمن قال الرب جل جلاله: أيها الزائر، طبت وطابت لك الجنة.
153. It has been reported that Abu 'Abd Allah عليه السلام said: When one visits his brother-in-faith, the Lord [M.G] says, 'O you who are visiting! Rejoice and enjoy Paradise.'