Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrated that Sayyiduna al-Fadl bin Abbas (may Allah be pleased with him) was asked: Did the Prophet (peace and blessings be upon him) pray inside the Ka'bah? He said: "No."
Hadith Referenceالمعجم الكبير للطبراني / باب الفاء / 15843