Sunan Ibn Majah Book 9, Hadith 1856

حَدَّثَنَا مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ سَمُرَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ مُرَّةَ، عَنْ أَبِيهِ، عَنْ سَالِمِ بْنِ أَبِي الْجَعْدِ، عَنْ ثَوْبَانَ، قَالَ لَمَّا نَزَلَ فِي الْفِضَّةِ وَالذَّهَبِ مَا نَزَلَ قَالُوا فَأَىَّ الْمَالِ نَتَّخِذُ قَالَ عُمَرُ فَأَنَا أَعْلَمُ لَكُمْ ذَلِكَ ‏.‏ فَأَوْضَعَ عَلَى بَعِيرِهِ فَأَدْرَكَ النَّبِيَّ ـ صلى الله عليه وسلم ـ وَأَنَا فِي أَثَرِهِ فَقَالَ يَا رَسُولَ اللَّهِ أَىَّ الْمَالِ نَتَّخِذُ فَقَالَ ‏ "‏ لِيَتَّخِذْ أَحَدُكُمْ قَلْبًا شَاكِرًا وَلِسَانًا ذَاكِرًا وَزَوْجَةً مُؤْمِنَةً تُعِينُ أَحَدَكُمْ عَلَى أَمْرِ الآخِرَةِ ‏"‏ ‏.‏

It was narrated that:Thawban said: “When the Verse concerning silver and gold was revealed, they said: 'What kind of wealth should we acquire?' Umar said: 'I will tell you about that.' So he rode on his camel and caught up with the Prophet, and I followed him. He said: 'O Messenger of Allah what kind of wealth should we acquire?' He said: 'Let one of you acquire a thankful heart, a tongue that remembers Allah and a believing wife who will help him with regard to the Hereafter.' ”