Hamzah bin ’Amro Al-Aslami (RAA) narrated, ‘I said to the Messenger of Allah ( صلی اللہ علیہ وسلم ) ‘O Messenger of Allah ( صلی اللہ علیہ وسلم )! I find within me the strength to fast while traveling. Would there be any blame upon me if I were to do so?’ The Messenger of Allah ( صلی اللہ علیہ وسلم ) said to him, "It is a concession from Allah. Whoever takes it has done well. Whoever likes to fast, there is no blame upon him."Related by Muslim. And it's basic meaning is in Al-Bukhari and Muslim from the narration of Aisha (with the wording) "that Hamza bin 'Amro asked".

Ibn ’Abbas (RAA) narrated, ‘An elderly man is permitted to break his fast, but he must feed a poor person daily, and he does not have to make up for it.’ Related by Ad-Daraqutni and Al- hakim, who rendered it to be Sahih

Abu Hurairah (RAA) narrated that A man came to the Messenger of Allah ( صلی اللہ علیہ وسلم ) and said,“l am ruined O Messenger of Allah ( صلی اللہ علیہ وسلم )!" The Messenger of Allah ( صلی اللہ علیہ وسلم ) asked him,“What has ruined you?" The man replied, ‘I had intercourse with my wife during the day in Ramadan while fasting)’ The Prophet said to him, "Are you able to free a slave?" The man said, ‘No.’ The Prophet said, "Can you fast for two consecutive months?" He said, ‘NO.' The Prophet then asked him, "Can you provide food for sixty poor people?" He said, ‘No.’ Then the man sat down. A basket of dates was brought to the Prophet and he said to the man,“Give this as Sadaqah (voluntary charity)”The man said, ‘To someone who is poorer than us!’ There is no one in this city (Al-Madinah) who is in need of these dates more than us!’ The Prophet laughed until his molar teeth could be seen and said to the man,“Go and feed your family with these dates.”Related by the seven Imams and the wording is from Muslim.

'A’isha and Umm Salamah (RAA) narrated, The Messenger of Allah ( صلی اللہ علیہ وسلم ) would rise in the morning (when it is already Fajr time) while he was Junub (in a state of major ritual impurity due to intercourse) on a day in Ramadan. He would then perform Ghusl and fast. Agreed upon. In the narration of Muslim on the authority of Umm Salamah, ‘And he would not make up for it (that day).’

'A’isha (RAA) narrated that The Messenger of Allah ( صلی اللہ علیہ وسلم ) said: "Whoever dies while he still has some fasts to make up (of the days of Ramadan), then his heir (any of them) should fast on his behalf.”Agreed upon.