Ibn Wahb reported: Malik, may Allah have mercy on him, said to me, “The greatest loser among people is one who sold his Hereafter for his share of the world, and an even greater loser is one who sold his Hereafter for someone else’s share of the world.”
Source: Jāmi’ Bayān al-‘Ilm 2/906
عَنِ ابْنِ وَهْبٍ قَالَ قَالَ لِي مَالِكٌ رحمه الله أَخْسَرُ النَّاسِ مَنْ بَاعَ آخِرَتَهُ بِدُنْيَاهُ وَأَخْسَرُ مِنْهُ مَنْ بَاعَ آخِرَتَهُ بِدُنْيَا غَيْرِهِ
2/906 جامع بيان العلم وفضله