يَا أَيُّهَا الَّذِينَ آمَنُوا كُتِبَ عَلَيْكُمُ الصِّيَامُ كَمَا كُتِبَ عَلَى الَّذِينَ مِن قَبْلِكُمْ لَعَلَّكُمْ تَتَّقُونَ (183)
(2:183) O Believers, the Fast has been made obligatory on you just as it was prescribed for the followers of the Prophets before you. It is expected that this will produce piety in you. *183
*183). Like most other injunctions of Islam those relating to fasting were revealed gradually. In the beginning the Prophet (peace be on him) had instructed the Muslims to fast three days in every month, though this was not obligatory. When the injunction in the present verse was later revealed in 2 A.H., a degree of relaxation was introduced: it was stipulated that those who did not fast despite their capacity to endure it were obliged to feed one poor person as an expiation for each day of obligatory fasting missed (see verse 184). Another injunction was revealed later (see verse 185) and here the relaxation in respect of able-bodied persons was revoked. However, for the sick, the traveller, the pregnant, the breast-feeding women and the aged who could not endure fasting, the relaxation was retained. (See Bukhari, 'Tafsir al-Qur'an', 25; Tirmidhi, 'Sawm', 21; Nasai, 'Siyam', 51, 62, 64; Ibn Majah, 'Siyam', 12; Ahmad b. Hanbal, Musnad, vol. 3, p. 104; vol. 4, pp. 347 and 418; vol. 5, p. 29 - Ed.)