Fasting (Kitab Al-Siyam)
14/8. Chapter:
Regarding Preceding (Ramadan By Fasting At The End Of Sha'ban)
Sunan Abi Dawud
حَدَّثَنَا أَحْمَدُ بْنُ عَبْدِ الْوَاحِدِ، حَدَّثَنَا أَبُو مُسْهِرٍ، قَالَ كَانَ سَعِيدٌ - يَعْنِي ابْنَ عَبْدِ الْعَزِيزِ - يَقُولُ سِرُّهُ أَوَّلُهُ . قَالَ أَبُو دَاوُدَ وَقَالَ بَعْضُهُمْ سِرُّهُ وَسَطُهُ وَقَالُوا آخِرُهُ .
Narrated Ahmad b. 'Abd al-Wahid: On the authority of Abu Mushir. He said: Sa'id, that is, Ibn 'Abd al-'Aziz said: The meaning of the word sirraha is "in the beginning of it (the month)"
Reference : Sunan Abi Dawud 2331In-book reference : Book 14, Hadith 19English translation : Book 13, Hadith 2324