Buraydah bin (may Allah be pleased with him) reports:
"when Rasulalullah ﷺ came to Medinah, Salmaan Faarisi (may Allah be pleased with him) brought a tray which had fresh dates on it, and presented it to Messenger of Allah ﷺ, who asked:"O Salmaan, what dates are these?"He replied:"This is sadaqah for you and your companions"Messenger of Allah ﷺ replied:"We do not eat Sadaqah. Remove it from me."(The 'ulama differ in their opinions as to the meaning of the word "we". Some say it is Messenger of Allah ﷺ himself, and the plural is used as a mark of respect. Others explain that it is the ambiyaa (prophets). According to some it is Messenger of Allah ﷺ and his relatives, for whom it is not permissible to accept zakaah. According to this humble servant the third ihtimaal (supposition) is superior and more acceptable. Allaamah Munaawi's criticism of the third explanation is not forceful and weighty). On the next day this happened again. Salmaan (may Allah be pleased with him) brought a tray of fresh dates, and in reply to the question of Messenger of Allah ﷺ, he replied: "O messenger of Allah, it is a present for you".Messenger of Allah ﷺ said to the Sahaabah (may Allah be pleased with him)m "Help yourselves". (Sayyidina Messenger of Allah ﷺ himself ate from it. Bayjuri explains this thus: Sayyidina Salmaan (may Allah be pleased with him) bringing the dates on both days in this manner was to investigate, and to make Sayyidina Messenger of Allah ﷺ his master. Sayyidina Salmaan (may Allah be pleased with him) was an 'Aalim (learned) of the old days. He lived for a hundred and fifty years and according to some, he lived three hundred years. He had seen the signs of Sayyidina Messenger of Allah ﷺ in the kitaabs of previous prophets, that he will not accept sadaqah, but shall accept presents and gifts, and the seal of Prophethood will be between his two shoulders after witnessing the first two signs).He then saw the seal of Prophethood on the back of Sayyidina Messenger of Allah ﷺ and embraced Islam. (At that time Sayyidina Salmaan (may Allah be pleased with him) was a slave of a Jew from the tribe of Banu Qurayzah.Messenger of Allah ﷺ purchased him(this is figuratively speaking. The fact is that Messenger of Allah ﷺ made him a Mukaatab - One who buys One's freedom for any agreed sum.) and paid Dirhams for him to become a Mukaatab, and also agreed that he(Sayyidina Salmaan (may Allah be pleased with him) should plant for the Jew date palms,(the amount of three hundred palms) and until these bore fruit to tend them. Messenger of Allah ﷺ planted the palms with his mubaarak hands and it was his mu'jizah(miracle) that all the palms bore fruit in the same year. One tree among these did not bear fruit. Upon investigating it was found that Umar (may Allah be pleased with him) had planted this tree, and that it was not planted by Messenger of Allah ﷺ. Messenger of Allah ﷺ removed this palm and replanted it. Another mu'jizah Messenger of Allah ﷺ is that he planted the palms out of season and they bore fruit the same year.

حَدَّثَنَا أَبُو عَمَّارٍ الْحُسَيْنُ بْنُ حُرَيْثٍ الْخُزَاعِيُّ، قَالَ: حَدَّثَنَا عَلِيُّ بْنُ حُسَيْنِ بْنِ وَاقِدٍ، حَدَّثَنِي أَبِي، قَالَ: حَدَّثَنِي عَبْدُ اللهِ بْنُ بُرَيْدَةَ، قَالَ: سَمِعْتُ أَبِي بُرَيْدَةَ، يَقُولُ: جَاءَ سَلْمَانُ الْفَارِسِيُّ إِلَى رَسُولِ اللهِ ﷺ، حِينَ قَدِمَ الْمَدِينَةَ بِمَائِدَةٍ عَلَيْهَا رُطَبٌ، فَوَضَعَهَا بَيْنَ يَدَيْ رَسُولِ اللهِ ﷺ، فَقَالَ: يَا سَلْمَانُ مَا هَذَا؟ فَقَالَ: صَدَقَةٌ عَلَيْكَ، وَعَلَى أَصْحَابِكَ، فَقَالَ: ارْفَعْهَا، فَإِنَّا لا نَأْكُلُ الصَّدَقَةَ، قَالَ: فَرَفَعَهَا، فَجَاءَ الْغَدَ بِمِثْلِهِ، فَوَضَعَهُ بَيْنَ يَدَيْ رَسُولِ اللهِ ﷺ، فَقَالَ: مَا هَذَا يَا سَلْمَانُ؟ فَقَالَ: هَدِيَّةٌ لَكَ، فَقَالَ رَسُولُ اللهِ ﷺ لأَصْحَابِهِ: ابْسُطُوا ثُمَّ نَظَرَ إِلَى الْخَاتَمِ عَلَى ظَهْرِ رَسُولِ اللهِ ﷺ، فَآمَنَ بِهِ، وَكَانَ لِلْيَهُودِ فَاشْتَرَاهُ رَسُولُ اللهِ ﷺ، بِكَذَا وَكَذَا دِرْهَمًا عَلَى أَنْ يَغْرِسَ لَهُمْ نَخْلا، فَيَعْمَلَ سَلْمَانُ فِيهِ، حَتَّى تُطْعِمَ، فَغَرَسَ رَسُولُ اللهِ ﷺ، النَّخلَ إِلا نَخْلَةً وَاحِدَةً، غَرَسَهَا عُمَرُ فَحَمَلَتِ النَّخْلُ مِنْ عَامِهَا، وَلَمْ تَحْمِلْ نَخْلَةٌ، فَقَالَ رَسُولُ اللهِ ﷺ: مَا شَأْنُ هَذِهِ النَّخْلَةِ؟ فَقَالَ عُمَرُ: يَا رَسُولَ اللهِ، أَنَا غَرَسْتُهَا، فَنَزَعَهَا رَسُولُ اللهِ ﷺ، فَغَرَسَهَا فَحَمَلَتْ مِنْ عَامِهَا.