The Exclusive Honors that Allah has Reserved for the Believers
Kitāb al-Muʾmin|Volume 1|Book 1|Chapter 2
57- وعن أب عبد اله (ع) قال: إذا التق المؤمنانِ كان بينهما مائة رحمة؛ تسع وتسعون لأشَدّهما حباً لصاحبه
57. It has been reported that Abu 'Abd Allah عليه السلام said: When two believers meet, one hundred mercies are showered between them—ninety nine of these go to the one who loves the other more.