Reference: al-Kharaa.itee in Makaarim al-Akhlaaq – Volume 2, Page 588
Ibn ‘Aa.ishah said:
Some of the wise [people] have said: Ask for livelihood from the compassionate ones, [and] live under their protection, and do not seek [anything] from those of harsh and cruel hearts, for indeed the curse [of Allaah] descends upon them.