adeśha-kāle yad dānam apātrebhyaśh cha dīyate
asat-kṛitam avajñātaṁ tat tāmasam udāhṛitam||22||

Meaning : Charity given at the wrong place or time, or to unworthy persons, done carelessly and disrespectfully — that kind of charity is called tamasic (ignorant).