It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever misses the Asr prayer, it is as if his family and wealth have been destroyed." I asked Nafi', "Until the sun sets?" He replied, "Yes."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 6358