The Book of Pilgrimage
حَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا عُثْمَانُ بْنُ عُمَرَ، أَخْبَرَنَا عِيسَى بْنُ حَفْصِ بْنِ عَاصِمٍ، حَدَّثَنَا نَافِعٌ، عَنِ ابْنِ عُمَرَ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَنْ صَبَرَ عَلَى لأْوَائِهَا كُنْتُ لَهُ شَفِيعًا أَوْ شَهِيدًا يَوْمَ الْقِيَامَةِ " .Ibn 'Umar (Allah be pleased with them) reported Allah's Messenger (ﷺ) as saying:He who patiently endures the hardships of it (of this city of Medina), I would be an intercessor or a withness on his behalf on the Day of Resurrection
From Sahih Muslim, whose reports the scholars accept as authentic.