Narrated Abu Zuhayr an-Numayri: Abu Misbah al-Muqrai said: We used to sit in the company of Abu Zuhayr an-Numayri. He was a companion of the Prophet ﷺ, and he used to narrate good traditions. Once a man from among us made a supplication. He said: End it with the utterance of Amin, for Amin is like a seal on the book. Abu Zuhayr said: I shall tell you about that. We went out with the Messenger of Allah ﷺ one night and came upon a man who made supplication with persistence. The Prophet ﷺ waited to hear him. The Prophet ﷺ said: He will have done something which guarantees (Paradise for him) if he puts a seal to it. One of the people asked: What should he use as a seal? He replied: Amin, for if he ends it with Amin, he will do something which guarantees (Paradise for him). Then the man who questioned the Prophet ﷺ came to the man who was supplicating, and said to him: So-and-so, end it with Amin and receive the good news. These are the words of Mahmud. Abu Dawud said: Al-Muqrai is a clan of Himyar.
Hadith Referenceسنن ابي داود / أبواب تفريع استفتاح الصلاة / 938
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف, إسناده ضعيف, صبيح بن محرز مجهول الحال،لم يوثقه غير ابن حبان, انوار الصحيفه، صفحه نمبر 46
Hadith Takhrij« تفرد بہ أبو داود، (تحفة الأشراف: 12042) (ضعیف) » (اس کے راوی صبیح بن محرز لین الحدیث ہیں )
Narrated Abul Azhar al-Anmari: When the Messenger of Allah ﷺ went to his bed at night, he would say: in the name of Allah, I have laid down my side for Allah. O Allah! forgive me my sin, drive away my devil, free me from my responsibility, and place me in the highest assembly. Abu Dawud said: Abu Hammam al-Ahwazi transmitted it from Thawr. He mentioned Abu Zuhair al-Anmari (instead of Abu al-Azhar).
Hadith Referenceسنن ابي داود / أبواب النوم / 5054
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح, مشكوة المصابيح (2409), ثور ھو ابن يزيد