Musnad Ahmad 27:1717

Ya'qub narrated to us, Ibn Akhi Ibn Shihab narrated to us, from his uncle, Salim ibn 'Abdullah informed me, that 'Abdullah ibn 'Umar said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever misses the 'Asr prayer, it is as if he has been bereaved of his family and his wealth."