Jika tertutup awan, sempurnakan bulan Sya’ban menjadi 30 hari
Imam Ahmad : 9189حَدَّثَنَا يَحْيَى عَنْ شُعْبَةَ قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ زِيَادٍ عَنْ أَبِي هُرَيْرَةَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ فَأَكْمِلُوا الْعِدَّةَ ثَلَاثِينَ
Narrated to us [Yahya] from [Shu'bah] Narrated to us [Muhammad bin Ziyad] from [Abu Hurairah] from the Prophet peace and blessings be upon him, he said: "Fast because you see it and break your fast because you see it, so if you are blocked (by clouds) complete the number of the month to thirty days.