Is it authentic that the fasting of Dawud was more difficult for Ibn 'Amr?

Question:
Ibn 'Amr (may Allah be pleased with him) Was the fasting of Dawud not difficult for him?

Answer:
'Abdullah ibn 'Amr found it difficult in the last part of his life. He would break his fast for six days and fast for six days, saying: "I do not like to neglect anything regarding which I parted from the Prophet (peace and blessings be upon him)." So when he was unable to do so, he would break his fast consecutively, then fast consecutively. This was from his independent legal reasoning (may Allah be pleased with him). Otherwise, praise be to Allah, the matter is broad.
Q: What is established from him that he said, "I wish I had obeyed the advice of the Messenger of Allah (peace and blessings be upon him)"?
The Shaykh: It is possible: "I wish I had accepted the dispensation of the Messenger of Allah." I think it came from him as an act of independent legal reasoning; he did not like to neglect anything regarding which he parted from the Prophet (peace and blessings be upon him).