Hadithcore
Mishkat al-Masabih, 62
graded· Zubair `Aliza'i

Hudhaifa said, “Hypocrisy existed only in the time of God’s messenger, whereas to-day there are only unbelief and faith.” Bukhari transmitted it.

وَعَن حُذَيْفَة قَالَ: إِنَّمَا كَانَ النِّفَاق عَلَى عَهْدِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَأَمَّا الْيَوْمَ فَإِنَّمَا هُوَ الْكفْر بعد الايمان. رَوَاهُ البُخَارِيّ

References1 variant
In-Book Reference
Book 1, Hadith 56