It was narrated from Abu Dharr that the Prophet (ﷺ) said to a man: "You should fast the thirteenth, fourteenth and fifteenth." (Hasan) Abu 'Abdur-Rahman (An-Nasai) said: This is a mistake, it is not a narration of Bayan; perhaps Sufyan said: "It was narrated to us by two (Ithnan)" and the 'Alif was dropped so it became Bayan.

It was narrated that a man called 'Abdul-Malik narrated from his father, that: the Messenger of Allah (ﷺ) used to enjoin (fasting) these days of Al-Bid and he said: "That is (equivalent to) fasting for the whole month."

'Abdul-Malik bin Abi Al-Minhai narrated from his father that: the Prophet (ﷺ) commanded them to fast the three days of Al-Bid. He said: "That is (equivalent to) fasting for the whole month."

'Abdul-Malik bin Qudamah bin Milhan narrated that his father said: "The Messenger of Allah (ﷺ) used to command us to fast the three days with the shining bright nights (Al-Ayam Al-Bid), the thirteenth, fourteenth and fifteenth."

It was narrated from Abu Nawfal bin Abi 'Aqrab, from his father, that he asked the Prophet (ﷺ) 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 (ﷺ) said: "I am able, I am able." He did not want to increase it, but when I insisted, the Messenger of Allah (ﷺ) 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.