كتاب العين
50  
The Evil Eye

Yahya related to me from Malik that he had heard from Jabir ibn Abdullah that the Messenger of Allah, may Allah bless him and grant him peace, said, "When a man visits an invalid, he plunges into mercy to the extent that when he sits with him, it settles in him," or the like of that.

حَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ إِذَا عَادَ الرَّجُلُ الْمَرِيضَ خَاضَ الرَّحْمَةَ حَتَّى إِذَا قَعَدَ عِنْدَهُ قَرَّتْ فِيهِ ‏"‏ ‏.‏ أَوْ نَحْوَ هَذَا ‏.‏
Sunnah.com reference : Book 50, Hadith 18
USC-MSA web (English) reference : Book 50, Hadith 17
Arabic reference : Book 50, Hadith 1731