Imām Bukhārī narrates: Ādam narrated to us, he said: Shu'bah narrated to us, he said: Anas ibn Sīrīn narrated to us, he said: I heard Anas, may Allāh be pleased with him, he narrated that:
a man of the Ansār said: Indeed I do not have the strength to pray with you. That person was of a heavy body. That person prepared food for the Prophet ﷺ, then invited him to his house, and spread a mat for him, and washed one side of the mat. So he prayed two rak'ahs upon it. Then a person of Āl Jārūd asked Anas, may Allāh be pleased with him: Did the Prophet ﷺ pray the Duhā prayer? Anas said: I saw him praying the Duhā prayer only on that day.
حَدَّثَنَا آدَمُ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنَا أَنَسُ بْنُ سِيرِينَ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ قَالَ رَجُلٌ مِنَ الأَنْصَارِ إِنِّي لاَ أَسْتَطِيعُ الصَّلاَةَ مَعَكَ. وَكَانَ رَجُلاً ضَخْمًا، فَصَنَعَ لِلنَّبِيِّ صلى الله عليه وسلم طَعَامًا فَدَعَاهُ إِلَى مَنْزِلِهِ، فَبَسَطَ لَهُ حَصِيرًا وَنَضَحَ طَرَفَ الْحَصِيرِ، صَلَّى عَلَيْهِ رَكْعَتَيْنِ. فَقَالَ رَجُلٌ مِنْ آلِ الْجَارُودِ لأَنَسٍ أَكَانَ النَّبِيُّ صلى الله عليه وسلم يُصَلِّي الضُّحَى قَالَ مَا رَأَيْتُهُ صَلاَّهَا إِلاَّ يَوْمَئِذٍ.
Reference: Sahih Al Bukhari 670