Upright
وَ رَوَى زِيَادُ بْنُ سُوقَةَ عَنْ أَبِي جَعْفَرٍ ع لَا بَأْسَ أَنْ يُصَلِّيَ فِي الثَّوْبِ الْوَاحِدِ وَ أَزْرَارُهُ مَحْلُولَةٌ إِنَّ دِينَ مُحَمَّدٍ ص حَنِيفٌ.
And it is reported by Ziyad Bin Suweyq,
From Abu Ja’far-asws having said: ‘There is no problem if he were to pray Salat in one cloth, and its buttons are loose. The religion of Muhammad-saww is ‘حَنِيفٌ’ (upright)’.[1]
[1] Bihar Al-Anwaar V 80 – The Book Salat – Ch 14 H 13 / 7