SB 10.45.7
mataram pitaram vrddham
bharyam sadhvim sutam sisum
gurum vipram prapannam ca
kalpo ’bibhrac chvasan-mrtah
Translation:
A man who, though able to do so, fails to support his elderly parents, chaste wife, young child or spiritual master, or who neglects a brahmana or anyone who comes to him for shelter, is considered dead, though breathing.