[Machine] I heard the Messenger of Allah ﷺ say, "Do not fast until you see the crescent moon, and if it is hidden from you, then complete thirty (days)." Jabir reported that the Messenger of Allah ﷺ once abandoned fasting for a month, so it became twenty-nine, and he said, "The month is only twenty-nine days."
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَا تَصُومُوا حَتَّى تَرَوْا الْهِلَالَ فَإِنْ خَفِيَ عَلَيْكُمْ فَأَتِمُّوا ثَلَاثِينَ ؟ وَقَالَ جَابِرٌ هَجَرَ رَسُولُ اللهِ ﷺ نِسَاءَهُ شَهْرًا فَنَزَلَ لِتِسْعٍ وَعِشْرِينَ وَقَالَ إِنَّمَا الشَّهْرُ تِسْعٌ وَعِشْرُونَ