Spiritual Certainty (Yaqin) in the Hereafter

ٱلَّذِينَ يُقِيمُونَ ٱلصَّلَوٰةَ وَيُؤْتُونَ ٱلزَّكَوٰةَ وَهُم بِٱلْـَٔاخِرَةِ هُمْ يُوقِنُونَ

Who establish prayer and give zakāh, and of the Hereafter they are certain [in faith].