Jika tertutup awan, sempurnakan bulan Sya’ban menjadi 30 hari
Imam Ahmad : 9094حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ الْأُمَوِيُّ قَالَ حَدَّثَنَا الْحَجَّاجُ عَنْ عَطَاءٍ عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ الشَّهْرُ فَأَكْمِلُوا الْعِدَّةَ ثَلَاثِينَ
Narrated to us [Yahya bin Sa'id Al Umawi] said: Narrated to us [Al Hajjaj] from ['Atho`] from [Abu Hurairah] said: The Prophet peace and blessings be upon him said: "Fast because you see it and break your fast because you see it, so if you are prevented from seeing it, complete the number to thirty days.