[Machine] "If one of you prays a single unit of the dawn prayer and the sun rises before he finishes, he should also pray another unit." Hammam ibn Yahya disagreed with this."  

«إِذَا صَلَّى أَحَدُكُمْ رَكْعَةً مِنْ صَلَاةِ الصُّبْحِ ثُمَّ طَلَعَتِ الشَّمْسُ فَلْيُصَلِّ إِلَيْهَا أُخْرَى» خَالَفَهُ هَمَّامُ بْنُ يَحْيَى  

[Machine] A man prayed a unit of the dawn prayer, then the sun rose and he said, "Inform me." Khalas ibn Amr reported to me from Abu Rafi that Abu Hurairah narrated to him that the Messenger of Allah ﷺ said, "He has completed his prayer."  

عَنْ رَجُلٍ صَلَّى رَكْعَةً مِنْ صَلَاةِ الصُّبْحِ ثُمَّ طَلَعَتِ الشَّمْسُ فَقَالَ حَدَّثَنِي خِلَاسُ بْنُ عَمْرٍو عَنْ أَبِي رَافِعٍ أَنُّ أَبَا هُرَيْرَةُ حَدَّثَهُ أَنُّ رَسُولُ اللهِ ﷺ قَالَ «يُتِمُّ صَلَاتَهُ»