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)" Translation Not Available

Book Ref: Sunan Abi Dawud Book 14 Hadith 2331
Web Ref:  Sunan Abi Dawud Book 13 Hadith 2324