It is narrated from Mahan that a group came to the Prophet (peace and blessings be upon him) and said: "We have indeed committed great sins." The narrator says: I do not think that he (peace and blessings be upon him) gave them any reply (immediately). Then, when they turned to leave, this blessed verse was revealed: "And when those who believe in Our verses come to you, say: Peace be upon you. Your Lord has prescribed mercy upon Himself" [Surah al-An'am: 54]. So the Prophet (peace and blessings be upon him) called them back and recited this noble verse to them.
Imam Musaddad recorded it in his Musnad.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب التفسير / 3599
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :هذا إسناد ضعيف على إرساله بين ماهان، والنبي صلى الله عليه وسلم وثقه رجاله. » «انفرد به المصنف من هذا الطريق»