And (in Surah Al-Ma'idah) the statement of Allah the Exalted «فكفارته إطعام عشرة مساكين‏» and that when this verse was revealed, the Prophet (peace and blessings of Allah be upon him) ordered that then a ransom must be given, either by fasting, charity, or sacrifice. And it is narrated from Ibn Abbas (may Allah be pleased with them both), and 'Ata and 'Ikrimah, that wherever the word «أو أو» (meaning "or") appears in the Noble Qur'an, it is intended to indicate a choice. And the Prophet (peace and blessings of Allah be upon him) gave Ka'b (may Allah be pleased with him) the choice in the matter of ransom (whether to feed the poor or to offer a goat in charity).

Narrated Ka`b bin 'Ujra: I came to the Prophet and he said to me, "Come near." So I went near to him and he said, "Are your lice troubling you?" I replied, "Yes." He said, "(Shave your head and) make expiation in the form of fasting, Sadaqa (giving in charity), or offering a sacrifice." (The sub-narrator) Aiyub said, "Fasting should be for three days, and the Nusuk (sacrifice) is to be a sheep, and the Sadaqa is to be given to six poor persons."

And when does expiation become obligatory upon the wealthy and the needy?

Narrated Abu Huraira: A man came to the Prophet and said, "I am ruined!" The Prophet said, "What is the matter with you?" He said, "I had sexual relation with my wife (while I was fasting) in Ramadan." The Prophet said, "Have you got enough to manumit a slave?" He said, "No." The Prophet said, "Can you fast for two successive months?" The man said, "No." The Prophet said, "Can you feed sixty poor persons?" The man said, "No." Then the Prophet said to him, "Sit down," and he sat down. Afterwards an 'Irq, i.e., a big basket containing dates was brought to the Prophet and the Prophet said to him, "Take this and give it in charity." The man said, "To poorer people than we?" On that, the Prophet smiled till his premolar teeth became visible, and then told him, "Feed your family with it." (See Hadith No. 157, Vol 3)

Narrated Abu Huraira: A man came to Allah's Apostle and said, "I am ruined!" The Prophet said to him, "What is the matter?" He said, "I have done a sexual relation with my wife (while fasting) in Ramadan." The Prophet said to him?" "Can you afford to manumit a slave?" He said, "No." The Prophet said, "Can you fast for two successive months?" He said, "No." The Prophet said, "Can you feed sixty poor persons?" He said, "No." Then an Ansari man came with an Irq (a big basket full of dates). The Prophet said (to the man), "Take this (basket) and give it in charity." That man said, "To poorer people than we, O Allah's Apostle? By Him Who has sent you with the Truth! There is no house in between the two mountains (of the city of Medina) poorer than we." So the Prophet said (to him), "Go and feed it to your family."

Narrated Abu Huraira: A man came to the Prophets and said, "I am ruined!" The Prophet said, "What is the matter with you?" He said, "I have done a sexual relation with my wife (while fasting) in Ramadan" The Prophet said to him, "Can you afford to manumit a slave?" He said, "No." The Prophet said, "Can you fast for two successive months?" He said, "No." The Prophet said, "Can you feed sixty poor persons?" He said, "I have nothing." Later on an Irq (big basket) containing dates was given to the Prophet, and the Prophet said (to him), "Take this basket and give it in charity." The man said, "To poorer people than we? Indeed, there is nobody between its (i.e., Medina's) two mountains who is poorer than we." The Prophet then said, "Take it and feed your family with it."

And the Prophet ( صلی اللہ علیہ وسلم )’s measure (a container) and the blessing in it, and the statement regarding how the people of Madinah inherited the Sa’ and Mudd of barley generation after generation.

Narrated Al-Ju'aid bin `Abdur-Rahman: As-Sa'ib bin Yazid said, "The Sa' at the time of the Prophet was equal to one Mudd plus one-third of a Mudd of your time, and then it was increased in the time of Caliph `Umar bin `Abdul `Aziz."

Narrated Nafi`: Ibn `Umar used to give the Zakat of Ramadan (Zakat-al-Fitr) according to the Mudd of the Prophet, the first Mudd, and he also used to give things for expiation for oaths according to the Mudd of the Prophet. Abu Qutaiba said, "Malik said to us, 'Our Mudd (i.e., of Medina) is better than yours and we do not see any superiority except in the Mudd of the Prophet!' Malik further said, to me, 'If a ruler came to you and fixed a Mudd smaller than the one of the Prophet, by what Mudd would you measure what you give (for expiation or Zakat-al-Fitr?' I replied, 'We would give it according to the Mudd of the Prophet' On that, Malik said, 'Then, don't you see that we have to revert to the Mudd of the Prophet ultimately?'"

Narrated Anas bin Malik: Allah's Apostle said, "O Allah! Bestow Your Blessings on their measures, Sa' and Mudd (i.e., of the people of Medina).