Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Uqbah bin Amir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Charity extinguishes the heat from the graves of those who give charity, and it is only the believer who will be under the shade of his charity on the Day of Resurrection."