Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
abudawud:5093Muḥammad b. al-ʿAlāʾ > Zayd b. Ḥubāb > Abū Hilāl > Qatādah

When the Messenger of Allah ﷺ saw the new moon, he turned away his face from it. Abu Dawud said: On this subject there is no tradition which has perfect chain and is sound.  

أبو داود:٥٠٩٣حَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ أَنَّ زَيْدَ بْنَ حُبَابٍ أَخْبَرَهُمْ عَنْ أَبِي هِلاَلٍ عَنْ قَتَادَةَ

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا رَأَى الْهِلاَلَ صَرَفَ وَجْهَهُ عَنْهُ  

قَالَ أَبُو دَاوُدَ لَيْسَ عَنِ النَّبِيِّ ﷺ فِي هَذَا الْبَابِ حَدِيثٌ مُسْنَدٌ صَحِيحٌ