Musnad Ahmad 658:235

Waki’ narrated to us, Isra’il narrated to us, from Abu Ishaq, from Al-Bara’ ibn ‘Azib, who said: "The Messenger of Allah (peace and blessings of Allah be upon him) prayed towards Bayt al-Maqdis for sixteen months, or seventeen months, then he was directed towards the Kaaba, and he used to love that." Then Allah, the Almighty and Majestic, revealed: {We have certainly seen the turning of your face, [O Muhammad], toward the heaven, and We will surely turn you to a qiblah with which you will be pleased. So turn your face toward al-Masjid al-Haram} [Al-Baqarah: 144], the verse. He said: A man who had prayed the Asr prayer with the Prophet (peace and blessings of Allah be upon him) passed by some people of the Ansar while they were bowing in the Asr prayer towards Bayt al-Maqdis. He said: "He bears witness that he prayed with the Messenger of Allah (peace and blessings of Allah be upon him), and that he has been directed towards the Kaaba." He said: So they turned while they were bowing in the Asr prayer.