Al-Bayhaqi reported: Hasan al-Basri, may Allah have mercy on him, said, “It is enough malevolence against the Muslims that one desires to raise their prices.”
Source: Shu’ab al-Imān 10706
عن البيهقي قال الحسن البصري رحمه الله كَفَى غِشًّا لِلْمُسْلِمِينَ أَنْ يَتَمَنَّى غَلَاءَ سِعْرِهِمْ
10706 شعب الإيمان فصل في ترك الاحتكار