Yahya related to me from Malik from Zayd ibn Aslam that Ata ibn Yasar said, "A man came to the Messenger of Allah ﷺ and asked him about the time of the subh prayer. The Messenger of Allah ﷺ did not answer him, but in the morning he prayed subh at first light. The following morning he prayed subh when it was much lighter, and then said, 'Where is the man who was asking about the time of the prayer?' The man replied, 'Here I am, Messenger of Allah.' He said,'The time is between these two.' "  

جَاءَ رَجُلٌ إِلَى رَسُولِ اللَّهِ ﷺ فَسَأَلَهُ عَنْ وَقْتِ صَلاَةِ الصُّبْحِ قَالَ فَسَكَتَ عَنْهُ رَسُولُ اللَّهِ ﷺ حَتَّى إِذَا كَانَ مِنَ الْغَدِ صَلَّى الصُّبْحَ حِينَ طَلَعَ الْفَجْرُ ثُمَّ صَلَّى الصُّبْحَ مِنَ الْغَدِ بَعْدَ أَنْ أَسْفَرَ ثُمَّ قَالَ أَيْنَ السَّائِلُ عَنْ وَقْتِ الصَّلاَةِ قَالَ هَا أَنَا ذَا يَا رَسُولَ اللَّهِ فَقَالَ مَا بَيْنَ هَذَيْنِ وَقْتٌ