Hadith.3796 - Bashshar ibn Yasar narrated:
I asked Abu Abdullah (as) about a man who sells merchandise for deferred payment (on credit). Can he buy it back from the one to whom he sold it?
Imam (as) replied: "Yes, there is no problem with it."
I then asked him: "Can I buy back my own merchandise?"
Imam (as) replied: "It is not your merchandise, nor your cattle, nor your sheep."