Sutra on Wisdom at the Hour of Death
The Sutra on Wisdom at the Hour of Death (Skt. Atyayajñānasūtra; Tib. འདའ་ཀ་ཡེ་ཤེས་ཀྱི་མདོ་, da ka yé shé kyi do, Wyl. 'da' ka ye shes kyi mdo) is found in the General Sutra (mdo sde) section of the Tibetan Kangyur (Toh 122).
In this brief sutra the Buddha, residing in the Akanishtha realm, by the use of similes, explains to bodhisattva mahasattva Akashagarbha the wisdom that should be cultivated by the bodhisattva when about to die.