People used to perform Hajj and not bring provisions with them. Abu Mas’ud said the inhabitants of Yemen or people of Yemen used to perform Hajj and not bring provisions with them. They would declare we put our trust in Allah. So Allah most high sent down “ and bring provisions, but the best provision is piety”.  

أَبُو مَسْعُودٍ كَانَ أَهْلُ الْيَمَنِ أَوْ نَاسٌ مِنْ أَهْلِ الْيَمَنِ يَحُجُّونَ وَلاَ يَتَزَوَّدُونَ وَيَقُولُونَ نَحْنُ الْمُتَوَكِّلُونَ فَأَنْزَلَ اللَّهُ سُبْحَانَهُ { وَتَزَوَّدُوا فَإِنَّ خَيْرَ الزَّادِ التَّقْوَى } الآيَةَ