الكافي- ط الاسلامية, volume 4, page 180

1. Ahmad ibn Idris has narrated from al-Hassan ibn Ali al-Kufiy from ‘Ubays ibn Hisham from Aban ibn ‘Uthman from ‘Abd al- Rahman who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who was captured by the Romans, and he did not fast in the month of Ramadan because he did not know which month was it. He (the Imam) said, ‘He is required to fast for one month. He then tries to calculate; if the month that he has fasted is before the month of Ramadan; it is not sufficient, and if it is after the month of Ramadan, it is then sufficient.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

2. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Yahya ibn ‘Amr ibn Khalifah al-Zayyat from ‘Abd Allah ibn Bukayr from certain individuals of our people who has said the following: “One of the two Imam, ‘Alayhim al-Salam, has stated this Hadith. ‘The Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, has said, “O young people, you may have carnal relations. If you are unable to do so, you should fast; it has a castrating effect (on carnal desires).””’

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

3. A number of our people have narrated from Ahmad ibn Muhammad from al-Qasim ibn Yahya from his grandfather, al-Hassan ibn Rashid from abu Basir who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘My father narrated to me from my grandfather from his ancestors, ‘Alayhim al-Salam, who have narrated this Hadith: “Imam Ali (a.s.), has said, ‘It is preferable for a man to go to bed with his wife during the first night of the month of Ramadan because of the words of Allah, most Majestic, most Glorious, “Al-Rafath (to go to bed with your wives)” is made lawful for you during the night of fasting.”””

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.