Sunan an-Nasa'i, Volume 3, Book 22, Hadith 2154 (DarusSalam) ⓘ
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." (Daif)
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 صلى الله عليه وسلم قَالَ هُوَ النَّهَارُ إِلاَّ أَنَّ الشَّمْسَ لَمْ تَطْلُعْ .
also referenced under: Hadith 2152 (Reference) & Book 22, Hadith 63 (In-Book)