Hawzah News Agency – Imam al-Sadiq peace be upon him says:

خِيارُكُم سُمَحاؤكُم وشِرارُكُم بُخَلاؤكُم.

'The best ones from among you are those who are liberal and the worst ones from among you are the miserly.'

Source: Bihar al-Anwar, v. 71, p. 350, no. 3