Abu Yahya (RA) said that Hudhayfah (RA) was asked, “Who is a hypocrite?” He replied, “A hypocrite is one who describes Islam but does not act according to it.” [1]
[1] Al-Ruasi, Waki ibn al-Jarrah, Al-Zuhd, p. 768, Maktabat al-Dar, Madinah al-Munawwarah, n.d.