The Saba Kadisha of Radoshitz zy’a was accustomed to provide remedies for the sick through various means. To some, he gave ‘shirayim’ from his challah. To others, he gave water from a nearby stream that was piped into his house. He would give a cup of water to the sick person, and he would wondrously be healed immediately.
When chasidim expressed amazement about this open miracle, he said, ‘This is clearly hinted to in the Torah. It says that if we serve Hashem, He will bless our bread and water and remove all sickness from our midst. This means that when we serve Hashem, our bread and water will be blessed and given the power to heal the sick.’