وَعَن أبي زُهَيْر النميري
قَالَ: خَرَجْنَا مَعَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ذَاتِ يَوْمٍ فَأَتَيْنَا عَلَى رَجُلٍ قَدْ أَلَحَّ فِي الْمَسْأَلَةِ فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: أَوْجَبَ إِنْ خَتَمَ. فَقَالَ: رَجُلٌ مِنَ الْقَوْمِ: بِأَيِّ شَيْءٍ يَخْتِمُ؟ قَالَ: «بآمين»
We went out with God’s Messenger one night and came upon a man who made supplication with persistence. The Prophet (sallallahu alayhi wa sallam) said, “He will have done something which guarantees if he puts a seal to it.” One of the people asked what he should use for a seal, and he replied, “Amen”.
Mishkat al-Masabih 794, Book 5, Prayer, Hadith 272. 1 min read