Abdullah bin Masud reported,

We were sitting on Friday evening in the mosque when a man from the Ansar said, "If one of us were to see a man with his wife and kill him, you would put him to death. If he spoke up, you would flog him. And if he kept silent, he would be silent over a burning rage. By Allah, if I live until morning, I will surely ask the Messenger of Allah ﷺ about this."So he asked him, saying, "Messenger of Allah, if one of us sees a man with his wife and kills him, you put him to death. If he speaks up, you flog him. And if he stays silent, he stays silent over a burning rage. O Allah, render judgment."Then the verse of lian was revealed, and that man was the first to be tested by it.

Ahmad 4001

Sahih

حدثنا يحيى بن حماد حدثنا أبو عوانة عن الأعمش عن إبراهيم عن علقمة

عن عبد الله قال

كنا جلوسا عشية الجمعة في المسجد قال فقال رجل من الأنصار أحدنا رأى مع امرأته رجلا فقتله قتلتموه وإن تكلم جلدتموه وإن سكت سكت على غيظ والله لئن أصبحت صالحا لأسألن رسول الله ﷺ قال فسأله فقال يا رسول الله إن أحدنا رأى مع امرأته رجلا فقتله قتلتموه وإن تكلم جلدتموه وإن سكت سكت على غيظ اللهم احكم قال فأنزلت آية اللعان قال فكان ذاك الرجل أول من ابتلي به

أحمد 4001صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Abdullah bin Masud
Numbering
Darussalam 4001
Ahmad 4001