´It was narrated from Abu Nawfal bin Abi 'Aqrab that his father said:` "I asked the Messenger of Allah about fasting and he said: 'Fast one day of the month.' I said: 'Fast one day of the month.' I said: 'O Messenger of Allah, let me do more, let me do more.' He said: 'Let me do more, let mo do more; I am able for it.' Then the Messenger of Allah fell silent until I thought that he was going to refuse my request. Then he said: 'fast three days of each month."'
Hadith Referenceسنن نسائي / كتاب الصيام / 2435
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده صحيح
´It was narrated from Abu Nawfal bin Abi 'Aqrab, from his father, that he asked the Prophet 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, O Messenger of Allah, I am able." The Messenger of Allah said: "I am able, I am able." He did not want to increase it, but when I insisted, the Messenger of Allah 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.
Hadith Referenceسنن نسائي / كتاب الصيام / 2436
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده صحيح