It was narrated that Zirr said:

"We said to Hudhaifah: 'At what time did you take Sahur with the Messenger of Allah?' He said: 'It was daytime, but before the sun had risen."

أَخْبَرَنَا مُحَمَّدُ بْنُ يَحْيَى بْنِ أَيُّوبَ، قَالَ أَنْبَأَنَا وَكِيعٌ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَاصِمٍ، عَنْ زِرٍّ، قَالَ قُلْنَا لِحُذَيْفَةَ أَىَّ سَاعَةٍ تَسَحَّرْتَ مَعَ رَسُولِ اللَّهِ ﷺ قَالَ هُوَ النَّهَارُ إِلاَّ أَنَّ الشَّمْسَ لَمْ تَطْلُعْ .