Sahih Bukhari Volume 5, Book 64, Hadith 4017

حَدَّثَنَا عَبْدَانُ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا مَعْمَرٌ، وَيُونُسُ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، أَنَّهُ أَخْبَرَهُ أَنَّ الْمِسْوَرَ بْنَ مَخْرَمَةَ أَخْبَرَهُ أَنَّ عَمْرَو بْنَ عَوْفٍ وَهْوَ حَلِيفٌ لِبَنِي عَامِرِ بْنِ لُؤَىٍّ، وَكَانَ شَهِدَ بَدْرًا مَعَ النَّبِيِّ صلى الله عليه وسلم أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم بَعَثَ أَبَا عُبَيْدَةَ بْنَ الْجَرَّاحِ إِلَى الْبَحْرَيْنِ يَأْتِي بِجِزْيَتِهَا، وَكَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم هُوَ صَالَحَ أَهْلَ الْبَحْرَيْنِ، وَأَمَّرَ عَلَيْهِمِ الْعَلاَءَ بْنَ الْحَضْرَمِيِّ، فَقَدِمَ أَبُو عُبَيْدَةَ بِمَالٍ مِنَ الْبَحْرَيْنِ فَسَمِعَتِ الأَنْصَارُ بِقُدُومِ أَبِي عُبَيْدَةَ، فَوَافَوْا صَلاَةَ الْفَجْرِ مَعَ النَّبِيِّ صلى الله عليه وسلم، فَلَمَّا انْصَرَفَ تَعَرَّضُوا لَهُ، فَتَبَسَّمَ رَسُولُ اللَّهِ صلى الله عليه وسلم حِينَ رَآهُمْ ثُمَّ قَالَ ‏"‏ أَظُنُّكُمْ سَمِعْتُمْ أَنَّ أَبَا عُبَيْدَةَ قَدِمَ بِشَىْءٍ ‏"‏‏.‏ قَالُوا أَجَلْ يَا رَسُولَ اللَّهِ‏.‏ قَالَ ‏"‏ فَأَبْشِرُوا وَأَمِّلُوا مَا يَسُرُّكُمْ، فَوَاللَّهِ مَا الْفَقْرَ أَخْشَى عَلَيْكُمْ، وَلَكِنِّي أَخْشَى أَنْ تُبْسَطَ عَلَيْكُمُ الدُّنْيَا كَمَا بُسِطَتْ عَلَى مَنْ قَبْلَكُمْ، فَتَنَافَسُوهَا كَمَا تَنَافَسُوهَا، وَتُهْلِكَكُمْ كَمَا أَهْلَكَتْهُمْ ‏"

Narrated By Al-Miswar bin Makhrama : That 'Amr bin Auf, who was an ally of Bani 'Amir bin Luai and one of those who fought at Badr in the company of the Prophet , said, "Allah's Apostle sent Abu 'Ubaida bin Al-Jarrah to Bahrain to bring the Jizya taxation from its people, for Allah's Apostle had made a peace treaty with the people of Bahrain and appointed Al-'Ala' bin Al-Hadrami as their ruler. So, Abu 'Ubaida arrived with the money from Bahrain. When the Ansar heard of the arrival of Abu 'Ubaida (on the next day) they offered the morning prayer with the Prophet and when the morning prayer had finished, they presented themselves before him. On seeing the Ansar, Allah's Apostle smiled and said, "I think you have heard that Abu 'Ubaida has brought something?" They replied, "Indeed, it is so, O Allah's Apostle!" He said, "Be happy, and hope for what will please you. By Allah, I am not afraid that you will be poor, but I fear that worldly wealth will be bestowed upon you as it was bestowed upon those who lived before you. So you will compete amongst yourselves for it, as they competed for it and it will destroy you as it did them."