Hadithcore
Al-Adab Al-Mufrad, 1134

Muhajir (who is as-Sa'igh) said, "I was sitting with one of the Companions of the Messenger of Allah, (ﷺ), called Dakhm, from al-Hadramaym. When someone asked him, 'How are you this morning?' Dakhm replied, 'We do not associate anything with Allah.'"

حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، قَالَ‏:‏ حَدَّثَنَا شَرِيكٌ، عَنْ مُهَاجِرٍ هُوَ الصَّائِغُ، قَالَ‏:‏ كُنْتُ أَجْلِسُ إِلَى رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم ضَخْمٍ مِنَ الْحَضْرَمِيِّينَ، فَكَانَ إِذَا قِيلَ لَهُ‏:‏ كَيْفَ أَصْبَحْتَ‏؟‏ قَالَ‏:‏ لا نُشْرِكُ بِاللَّهِ‏.‏

References2 variants
In-Book Reference
Book 45, Hadith 18
English Reference
Book 45, Hadith 1134