Sahih Bukhari
Hadith #1631
Narrated Abida bin Humaid:`Abdul, `Aziz bin Rufa`i said, ""I saw `Abdullah bin Az-Zubair performing Tawaf of the Ka`ba after the morning prayer then offering the two rak`at prayer."" `Abdul `Aziz added, ""I saw `Abdullah bin Az-Zubair offering a two rak`at prayer after the `Asr prayer."" He informed me that Aisha told him that the Prophet (ﷺ) used to offer those two rak`at whenever he entered her house