Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: Observe fast on sighting it (the new moon) and break (fast) on sighting it (the new moon), but if the sky is cloudy for you, then complete the number (of thirty).

Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: Observe fast on sighting it (the new moon) and break it on sighting it. But if (due to clouds) the actual position of the month is concealed from you, you should then count thirty (days).

Abu Hurairah (RA) narrated that the Messenger of Allah ( صلی اللہ علیہ وسلم ) (may peace he upon him) made a mention of the new moon and (in this connection) said: Observe fast when you see it (the new moon) and break fast when you see it (the new moon of Shawwal), but when (the actual position of the month is) concealed from you (on account of cloudy sky), then count thirty days.

Abu Hurairah (RA) reported Allah's Messenger ( صلی اللہ علیہ وسلم ) as saying: Do not observe fast for a day, or two days ahead of Ramadan except a person who is in the habit of observing a particular fast; he may fast on that day.

This hadith has been narrated on the authority of Yahya bin Abi Kathir with the same chain of transmitters.

Zuhri reported that (once) the Apostle of Allah ( صلی اللہ علیہ وسلم ) took an oath that he would not go to his wives for one Month. Zuhri said that 'Urwa narrated to him from 'A'isha (Allah be pleased with her) that she said: When twenty-nine nights were over, which I had counted, the Messenger of Allah ( صلی اللہ علیہ وسلم ) came to me (he came to me first of all). I said: Messenger of Allah, you had taken an oath that you would not come to us for a month, whereas you have come after twenty nine days which I have counted. Whereupon he said: The month may also consist of twenty-nine days.

Jabir (Allah be pleased with her) narrated that the Holy Prophet ( صلی اللہ علیہ وسلم ) separated himself from his wives for a month. (His wives said:) He came to us on the twenty-ninth day, whereupon we said: It is the twenty-ninth (day) today. Thereupon he said: So far as the month is concerned, (and he, with a view to explaining it) flapped his hands thrice, but held back one finger at the last turn.

Abu Zubair is reported to have heard Jabir bin 'Abdullah (Allah be pleased with both of them) as saying: The Apostle of Allah ( صلی اللہ علیہ وسلم ) separated himself from his wives for a month. (His wives said:) He came to us on the morning of the twenty-ninth. Upon this some, of the people said: It is the morning of twenty- ninth (according to our calculation). Upon this the Apostle of Allah ( صلی اللہ علیہ وسلم ) said: The month may also consist of twenty-nine days. The Apostle of Allah ( صلی اللہ علیہ وسلم ) then flapped his bands thrice, twice with all the fingers of both his hand (to indicate twenty-nine) and by the third time with nine (fingers).

Umm Salamah (RA) reported that the Apostle of Allah ( صلی اللہ علیہ وسلم ) took an oath that he would not go to some of his wives for the whole of the month. When twenty-nine days had passed he (the Holy Prophet) went to them in the morning or in the evening. Upon this it was said to him: Apostle of Allah ( صلی اللہ علیہ وسلم ) , you took an oath that you would not come to us for a month, whereupon he said: The month may also consist of twenty-nine days.

A hadith like this has been narrated on the authority of Ibn Juraij with the same chain of transmitters.