Musannaf Ibn Abi Shaybah 4805 — A man who forgets all the prayers

A freed slave of Sayyiduna Abu Bakrah (may Allah be pleased with him) said: Sayyiduna Abu Bakrah (may Allah be pleased with him) entered a garden, walked around in it and began to look at it. In this preoccupation he forgot the Asr prayer, until, when the sun began to decline toward setting, he remembered the prayer. He performed ablution and sat down. When the sun had set, he first prayed Asr and then Maghrib.