Surah Al-Fajr, ayah 18

وَلَا تَحَٰٓضُّونَ عَلَىٰ طَعَامِ ٱلۡمِسۡكِينِ ١٨

Walā tahāddūna 'alā ta'āmil-miskīn

And you do not encourage one another to feed the poor.