Yahya bin Sa'id al-Ansari, 'Abd Rabba bin Sa'id bin Qays bin 'Amr
Narrator names are parsed automatically from the isnad; identity and biographical details are matched from rijal sources (Itqan narrator profiles, muslimscholars.info).
Narrated Ka`b: The Prophet (ﷺ) said, "The example of a believer is that of a fresh tender plant, which the wind bends lt sometimes and some other time it makes it straight. And the example of a hypocrite is that of a pine tree which keeps straight till once it is uprooted suddenly.