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.
darimi:279Yazīd b. Hārūn > Ashʿath > al-Shaʿbī And Ibn Sīrīn

[Machine] The translation of the given Arabic text is:

"About the Messenger of Allah ﷺ , his face would show signs of concern during certain days, and he would say, 'Like this, or something similar to this, like this or something similar to this.'"  

الدارمي:٢٧٩أَخْبَرَنَا يَزِيدُ بْنُ هَارُونَ أَنبَأَنَا أَشْعَثُ عَنِ الشَّعْبِيِّ وَابْنِ سِيرِينَ أَنَّ ابْنَ مَسْعُودٍ كَانَ إِذَا حَدَّثَ

عَنْ رَسُولِ اللَّهِ ﷺ فِي الْأَيَّامِ تَرَبَّدَ وَجْهُهُ وَقَالَ «هَكَذَا أَوْ نَحْوَهُ هَكَذَا أَوْ نَحْوَهُ»