It is narrated from Hazrat Aisha that the Prophet (peace and blessings be upon him) used to recite the Mu'awwidhat and blow over himself. When the Prophet (peace and blessings be upon him) fell ill with the illness of his passing, I would hold his blessed hand and recite these words, then pass the Prophet’s (peace and blessings be upon him) hand over his body, so that the blessing of his hand would also be included.