It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) prayed two rak'ahs after Asr in her house, which he had not prayed before that, nor did he pray them after that.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19959