Imam Bukhari narrates: Musaddad narrated to us the hadeeth, he said: Yahya narrated to us the hadeeth, from Shu'bah, from Al-Hakam, from Ibraheem, from 'Alqamah, from Hazrat 'Abdullah bin Mas'ood (may Allāh be pleased with him), he narrated that

the Prophet ﷺ led the Zuhr prayer with five rak'ahs. Then the people said: Has the prayer been increased? He said: What is the reason for this? The people said: You led five rak'ahs! He turned his feet (towards the Qiblah) and performed two prostrations (of sahw).