The Questions of Bhadrapala the Merchant
The sutra known as The Questions of Bhadrapāla the Merchant (Skt. Bhadrapālaśreṣṭhiparipṛcchā; Tib. ཚོང་དཔོན་བཟང་སྐྱོང་གིས་ཞུས་པ་, tsong pön zang kyong gi shyüpa, Wyl. tsong dpon bzang skyong gis zhus pa) is found in the Ratnakuta (Heap of Jewels) section of the Tibetan Kangyur (Toh 83).
In this sutra the Buddha explains consciousness, death, and rebirth to the merchant Bhadrapala.