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.
suyuti:25964a

"Nothing veils the saying of 'There is no god except Allah' except what comes out of the mouth of the one who has mustaches on the night of the middle of Shaʿbān."  

Daylamī
السيوطي:٢٥٩٦٤aعن ابن مسعود

«لَا يَحْجُبُ قَوْلَ لَا إِلَهَ إلا الله عَنِ الله إلا مَا خَرَجَ مِنْ فَمِ صَاحِبِ الشاربين لَيلَةَ النِّصْفِ مِنْ شَعْبَانَ۔»  

الديلمي