Sunan Ibn Majah 88
سنن ابن ماجه#88Da'ifIt was narrated that Abu Musa Al-Ash'ari said:"The Messenger of Allah (ﷺ) said: 'The likeness of the heart is that of a feather blown about by the wind in the desert
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih Muquf
Zubair Ali ZaiDaif