It was narrated that Anas said:

"I went out with the Messenger of Allah ﷺ from Al-Madinah to Mekkah, and he continued to shorten his prayers, and he stayed there for ten days."

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ يَحْيَى بْنِ أَبِي إِسْحَاقَ، عَنْ أَنَسٍ، قَالَ خَرَجْتُ مَعَ رَسُولِ اللَّهِ ﷺ مِنَ الْمَدِينَةِ إِلَى مَكَّةَ فَلَمْ يَزَلْ يَقْصُرُ حَتَّى رَجَعَ فَأَقَامَ بِهَا عَشْرًا .