It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings of Allah be upon him) said: Whoever frees a Muslim slave, Allah will free every limb of the one who frees him from Hell in exchange for every limb of that slave. It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Holy Prophet (peace and blessings of Allah be upon him) said: In the summer, perform the Zuhr prayer after it becomes cooler, because the intensity of heat is due to the effect of the heat of Hell.