Rav Aḥa bar Ḥanina said: Anyone who visits an ill person takes from him one-sixtieth of his suffering. The Sages said to him: If so, let sixty people enter to visit him, and stand him up, and restore him to health! Rav Aḥa bar Ḥanina said to them: It is like the tenths of the school of Rabbi Yehuda HaNasi, who said that each of one’s daughters inherits one-tenth of his possessions. His intent was that each daughter would receive one-tenth of the remainder after the previous daughter took her portion. Here too, each visitor takes from the ill person one-sixtieth of the suffering that remains, and consequently a degree of suffering will always remain with the ill person. ...

Rabbi Akiva went out and taught: With regard to anyone who does not visit the sick, it is as though he is spilling blood, as it could be that the sick person has no one to care for him. If there are no visitors, no one will know his situation and therefore no one will come to his aid...