The intelligent person is one 
who does not waste his [time and] energy in that which does not benefit him, and does not [strive to] acquire that which will 
not accompany him [after his death]. (H. 6718)
Verily when Allah, the Glorified, wishes good for a 
servant, He grants him success in spending his lifetime doing the best deeds and blesses him with the ability to quickly use his available time to perform acts of worship, before [the coming of] his death. (H.10597)
One who is certain of the [eventual] departure [from this world] prepares for the journey. (H.9533)