It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) prayed seven and eight rak'ahs combined in Madinah: Zuhr and Asr, and Maghrib and Isha.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12753