Hadith on Peace: Allah teaches Adam the greeting of peace and mercy

Abu Huraira reported: The Prophet, peace and blessings be upon him, said, “Allah created Adam in His image, sixty cubits tall. When He created him, Allah said: Go and greet with peace these groups of assembled angels and listen to how they greet you, for this will be the greeting among your progeny. Adam said: Peace be upon you. The angels said: Peace be upon you and the mercy of Allah. Thus, they added the mercy of Allah. Everyone who enters Paradise will be in the image of Adam, for the creation has continued to diminish in stature until now.”

Source: Ṣaḥīḥ al-Bukhārī 5873, Ṣaḥīḥ Muslim 2841

Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim

عَنْ أَبِي هُرَيْرَةَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ خَلَقَ اللَّهُ آدَمَ عَلَى صُورَتِهِ طُولُهُ سِتُّونَ ذِرَاعًا فَلَمَّا خَلَقَهُ قَالَ اذْهَبْ فَسَلِّمْ عَلَى أُولَئِكَ النَّفَرِ مِنْ الْمَلَائِكَةِ جُلُوسٌ فَاسْتَمِعْ مَا يُحَيُّونَكَ فَإِنَّهَا تَحِيَّتُكَ وَتَحِيَّةُ ذُرِّيَّتِكَ فَقَالَ السَّلَامُ عَلَيْكُمْ فَقَالُوا السَّلَامُ عَلَيْكَ وَرَحْمَةُ اللَّهِ فَزَادُوهُ وَرَحْمَةُ اللَّهِ فَكُلُّ مَنْ يَدْخُلُ الْجَنَّةَ عَلَى صُورَةِ آدَمَ فَلَمْ يَزَلْ الْخَلْقُ يَنْقُصُ بَعْدُ حَتَّى الْآنَ

5873 صحيح البخاري كتاب الاستئذان باب بدء السلام

2841 صحيح مسلم كتاب الجنة وصفة نعيمها وأهلها باب يدخل الجنة أقوام أفئدتهم مثل أفئدة الطير