Sunan Ibn Majah — The Book of the Prayer

We were praying Zuhr with the Messenger of Allah at the time of intense heat (i.e., midday when the sun has just passed its zenith) and he said to us, “Wait for it to cool down before you pray, for intense heat is from the flaring up of the Hell-fire.”

the Messenger of Allah said: “Charity given to the poor is charity, and that given to a relative is two things: charity and upholding the ties of kinship.”