It was narrated from Abu Nawfal bin Abi ‘Aqrab, from his father, that he asked the Prophet صلی اللہ علیہ وآلہ وسلم about fasting and he said: “Fast One day of each month.” He asked him for more, saying: “May my father and mother be ransomed for you, I am able.” He said: “Fast two days of each month.” He said:“May my father and mother be sacrificed for you, Messenger of Allah صلی اللہ علیہ وآلہ وسلم, I am able.” The Messenger of Allah صلی اللہ علیہ وآلہ وسلم said: “I am able, I am able.” He did not want to increase it, but when I insisted, the Messenger of Allah صلی اللہ علیہ وآلہ وسلم said: “Fast three days of each month.” (Sahih) The end of what the Shaikh had about fasting, all praise is due to Allah the Lord of the worlds.