Huzaifa bin Yaman reported,

The Messenger of Allah ﷺ told us two hadiths. I have witnessed one of them, and I am waiting for the other.He told us that trustworthiness was sent down into the very depths of men's hearts, then they learned it from the Quran, and then they learned it from the Sunnah.He also told us about its removal. He said, "A man will sleep a sleep, and trustworthiness will be drawn out of his heart, leaving only a faint trace like a dot. Then he will sleep again, and more will be drawn out, leaving a trace like a blister, as when you roll an ember on your foot and it raises a swelling that looks puffed up but contains nothing inside. Then people will conduct their transactions with one another, but hardly anyone will fulfill his trust, until it will be said, 'Among the tribe of so-and-so there is a trustworthy man.' And it will be said of a man, 'How sensible he is, how refined, how strong-willed!' yet there will not be in his heart even a mustard seed's weight of faith."There came a time when I did not care which of you I dealt with, for if he were a Muslim, his Islam would compel him to deal honestly with me, and if he were a Christian, the one in authority over him would compel him to do so. But today, I would not transact with anyone except so-and-so and so-and-so.

Azami 96

Sahih

عن حذيفة بن اليمان قال

حدثنا رسول الله ﷺ حديثين، رأيت أحدهما وأنا أنتظر الآخر، حدثنا: أن الأمانة نزلت في جذر قلوب الرجال، ثم علموا من القرآن، ثم علموا من السنة. وحدثنا عن رفعها قال: ينام الرجل النومة فتنقبض الأمانة من قلبه فيقل أثرها مثل أثر الوكت، ثم ينام النومة فتنقبض فيقى أثرها مثل المجمر دحرجته على رجلك فنفط فتراه منتبرا وليس فيه شيء، فيصبح الناس يتبايعون فلا يكاد أحدهم يؤدي الأمانة، فيقال: إن في بني فلان رجلا أمينا، ويقال للرجل: ما أعقله وما أظرفه وما أجلده وما في قلبه مثقال حبة خردل من إيمان. ولقد أتى علي زمان وما أبالي أيكم بايعت، لئن كان مسلما رده عليه الإسلام وإن كان نصرانيا رده عليه ساعيه، فأما اليوم فما كنت أبايع إلا فلانا وفلانا.

الأعظمي 96صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Faith
Chapter
Qualities of faith
Section
Removal of trust and faith from some hearts
Numbering
Jami al-Kamil 96 (2nd edition)
Azami 96