Sayyidah Umm Salamah (may Allah be pleased with her) said: I saw the Prophet (peace and blessings be upon him) pray after Asr only once: some people came to him (peace and blessings be upon him), so he could not pray the two rak'ahs after Zuhr, and then he prayed them in my house after Asr.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4394