Major Sins and the Signs of Hypocrisy - Section 3 Mishkat al-Masabih 62
Arabic hadith text
وَعَن حُذَيْفَة قَالَ: إِنَّمَا كَانَ النِّفَاق عَلَى عَهْدِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَأَمَّا الْيَوْمَ فَإِنَّمَا هُوَ الْكفْر بعد الايمان. رَوَاهُ البُخَارِيّ
Translation
Hudhaifa said, “Hypocrisy existed only in the time of God’s messenger, whereas to-day there are only unbelief and faith.” Bukhari transmitted it.