It is narrated from Sayyiduna Thawban (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever goes to visit (and attend to) a sick person remains continually in the gardens of Paradise." He (peace and blessings be upon him) was asked: "O Messenger of Allah, what is this khurfat al-jannah?" He (peace and blessings be upon him) said: "Its fruits."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنائز / 6581