On Guru Granth Sahib: Who is a thief?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

जे मोहाका घरु मुहै घरु मुहि पितरी देइ ॥ Je mohākā gẖar muhai gẖar muhi piṯrī ḏee.The thief robs a house, and offers the stolen goods to his ancestors.

अगै वसतु सिञाणीऐ पितरी चोर करेइ