Narad to Nirvana
There is an ancient Hindu story about the messenger Narad who used to travel between heaven and earth to maintain 'communications' so to speak. On one such trip to heaven, he happened to go past two yogis practising in an effort to prepare for Nirvana. Each asked Narad to find out how long he would have to wait. So Narad checked out the situation for the yogis up in heaven and on his way back he dropped by to tell each their ETA.