When the news of the arrival of the Prophet ﷺ at Medina reached ʿAbdullah bin Salam, he went to him to ask him about certain things, He said, "I am going to ask you about three things which only a Prophet can answer: What is the first sign of The Hour? What is the first food which the people of Paradise will eat? Why does a child attract the similarity to his father or to his mother?" The Prophet ﷺ replied, "Gabriel has just now informed me of that." Ibn Salam said, "He (i.e. Gabriel) is the enemy of the Jews amongst the angels. The Prophet ﷺ said, "As for the first sign of The Hour, it will be a fire that will collect the people from the East to the West. As for the first meal which the people of Paradise will eat, it will be the caudate (extra) lobe of the fish-liver. As for the child, if the man's discharge proceeds the woman's discharge, the child attracts the similarity to the man, and if the woman's discharge proceeds the man's, then the child attracts the similarity to the woman." On this, ʿAbdullah bin Salam said, "I testify that None has the right to be worshipped except Allah, and that you are the Messenger of Allah." and added, "O Messenger of Allah ﷺ! Jews invent such lies as make one astonished, so please ask them about me before they know about my conversion to I slam . " The Jews came, and the Prophet ﷺ said, "What kind of man is ʿAbdullah bin Salam among you?" They replied, "The best of us and the son of the best of us and the most superior among us, and the son of the most superior among us. "The Prophet ﷺ said, "What would you think if ʿAbdullah bin Salam should embrace Islam?" They said, "May Allah protect him from that." The Prophet ﷺ repeated his question and they gave the same answer. Then ʿAbdullah came out to them and said, "I testify that None has the right to be worshipped except Allah and that Muhammad is the Messenger of Allah!" On this, the Jews said, "He is the most wicked among us and the son of the most wicked among us." So they degraded him. On this, he (i.e. ʿAbdullah bin Salam) said, "It is this that I was afraid of, O Messenger of Allah ﷺ.  

أَنَّ عَبْدَ اللَّهِ بْنَ سَلاَمٍ بَلَغَهُ مَقْدَمُ النَّبِيِّ ﷺ الْمَدِينَةَ فَأَتَاهُ يَسْأَلُهُ عَنْ أَشْيَاءَ فَقَالَ إِنِّي سَائِلُكَ عَنْ ثَلاَثٍ لاَ يَعْلَمُهُنَّ إِلاَّ نَبِيٌّ مَا أَوَّلُ أَشْرَاطِ السَّاعَةِ وَمَا أَوَّلُ طَعَامٍ يَأْكُلُهُ أَهْلُ الْجَنَّةِ وَمَا بَالُ الْوَلَدِ يَنْزِعُ إِلَى أَبِيهِ أَوْ إِلَى أُمِّهِ قَالَ أَخْبَرَنِي بِهِ جِبْرِيلُ آنِفًا قَالَ ابْنُ سَلاَمٍ ذَاكَ عَدُوُّ الْيَهُودِ مِنَ الْمَلاَئِكَةِ قَالَ أَمَّا أَوَّلُ أَشْرَاطِ السَّاعَةِ فَنَارٌ تَحْشُرُهُمْ مِنَ الْمَشْرِقِ إِلَى الْمَغْرِبِ وَأَمَّا أَوَّلُ طَعَامٍ يَأْكُلُهُ أَهْلُ الْجَنَّةِ فَزِيَادَةُ كَبِدِ الْحُوتِ وَأَمَّا الْوَلَدُ فَإِذَا سَبَقَ مَاءُ الرَّجُلِ مَاءَ الْمَرْأَةِ نَزَعَ الْوَلَدَ وَإِذَا سَبَقَ مَاءُ الْمَرْأَةِ مَاءَ الرَّجُلِ نَزَعَتِ الْوَلَدَ قَالَ أَشْهَدُ أَنَّ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنَّكَ رَسُولُ اللَّهِ قَالَ يَا رَسُولَ اللَّهِ إِنَّ الْيَهُودَ قَوْمٌ بُهُتٌ فَاسْأَلْهُمْ عَنِّي قَبْلَ أَنْ يَعْلَمُوا بِإِسْلاَمِي فَجَاءَتِ الْيَهُودُ فَقَالَ النَّبِيُّ ﷺ أَىُّ رَجُلٍ عَبْدُ اللَّهِ بْنُ سَلاَمٍ فِيكُمْ قَالُوا خَيْرُنَا وَابْنُ خَيْرِنَا وَأَفْضَلُنَا وَابْنُ أَفْضَلِنَا فَقَالَ النَّبِيُّ ﷺ أَرَأَيْتُمْ إِنْ أَسْلَمَ عَبْدُ اللَّهِ بْنُ سَلاَمٍ قَالُوا أَعَاذَهُ اللَّهُ مِنْ ذَلِكَ فَأَعَادَ عَلَيْهِمْ فَقَالُوا مِثْلَ ذَلِكَ فَخَرَجَ إِلَيْهِمْ عَبْدُ اللَّهِ فَقَالَ أَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنَّ مُحَمَّدًا رَسُولُ اللَّهِ قَالُوا شَرُّنَا وَابْنُ شَرِّنَا وَتَنَقَّصُوهُ قَالَ هَذَا كُنْتُ أَخَافُ يَا رَسُولَ اللَّهِ  

A partner of mine sold some Dirhams on credit in the market. I said, "Glorified be Allah! Is this legal?" He replied, "Glorified be Allah! By Allah, when I sold them in the market, nobody objected to it." Then I asked Al-Bara' bin ʿAzib (about it) he said, "We used to make such a transaction when the Prophet came to Medina. So he said, 'There is no harm in it if it is done from hand to hand, but it is not allowed on credit.' Go to Zaid bin Al- Arqam and ask him about it for he was the greatest trader of all of us." So I asked Zaid bin Al-Arqam., and he said the same (as Al-Bara) did."  

بَاعَ شَرِيكٌ لِي دَرَاهِمَ فِي السُّوقِ نَسِيئَةً فَقُلْتُ سُبْحَانَ اللَّهِ أَيَصْلُحُ هَذَا فَقَالَ سُبْحَانَ اللَّهِ وَاللَّهِ لَقَدْ بِعْتُهَا فِي السُّوقِ فَمَا عَابَهُ أَحَدٌ فَسَأَلْتُ الْبَرَاءَ بْنَ عَازِبٍ فَقَالَ قَدِمَ النَّبِيُّ ﷺ وَنَحْنُ نَتَبَايَعُ هَذَا الْبَيْعَ فَقَالَ مَا كَانَ يَدًا بِيَدٍ فَلَيْسَ بِهِ بَأْسٌ وَمَا كَانَ نَسِيئَةً فَلاَ يَصْلُحُ وَالْقَ زَيْدَ بْنَ أَرْقَمَ فَاسْأَلْهُ فَإِنَّهُ كَانَ أَعْظَمَنَا تِجَارَةً فَسَأَلْتُ زَيْدَ بْنَ أَرْقَمَ فَقَالَ مِثْلَهُ وَقَالَ سُفْيَانُ مَرَّةً فَقَالَ قَدِمَ عَلَيْنَا النَّبِيُّ ﷺ الْمَدِينَةَ وَنَحْنُ نَتَبَايَعُ وَقَالَ نَسِيئَةً إِلَى الْمَوْسِمِ أَوِ الْحَجِّ