Silsilah as-Sahihah 903 — Virtue of voluntary fasting

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: "Whoever fasts for one day in the way of Allah, Allah Almighty will keep Hellfire away from him at a distance of one hundred years’ journey."